Subject-verb agreement : - Subject-verb agreement is the grammatical rule that the verb or verbs in a sentence must match the number, person, and gender of the subject; in English, the verb needs to match just the number and sometimes the person . Subject-verb agreement, also called “subject-verb concord,” refers to matching the subject and verb of a sentence in tense, aspect, and mood (abbreviated as TAM), which translates to number, person, and gender.

Usage of Compound Subject in Subject Verb Agreement:   A compound subject consists of two or more nouns ( Ram and Sita, cowboy and cowgirl), pronouns (your and I, he and she), or noun phrases (a basket of eggs, a layer of dirt). Together, they form the subject of a sentence.

A) If the two subjects are joined by and, the verb will be plural. e.g.

• He and she were present in the function. 

In the question : -

1. The restaurant's chef and owner _______________ good fajitas.

In this sentence , there is  two joined parts?( restaurant chef and owner)  refer to a single person or thing, use a singular verb makes .

2. Every toy and game __________ to be put away.

In this sentence , when each or every is used with a subject that has two or more parts joined by and, the verb is singular which is has here .

3. Not only the Principal but also the teachers _____________ playing the match.

When two subjects are connected by or, either...or, neither...nor, and not only...but also, the subject which is closest to the verb determines whether the verb is singular or plural. Usually, the plural subject is placed near the verb (it means, if one subject is singular and the other is plural, the plural subject will be placed near the verb and the verb will be plural). So , were is used because the subject is teachers and it is plural .

Thus , the Correct Option is C , which is 1. Makes 2. Has 3. Were .

Subject-verb agreement : - Subject-verb agreement is the grammatical rule that the verb or verbs in a sentence must match the number, person, and gender of the subject; in English, the verb needs to match just the number and sometimes the person . Subject-verb agreement, also called “subject-verb concord,” refers to matching the subject and verb of a sentence in tense, aspect, and mood (abbreviated as TAM), which translates to number, person, and gender.

Usage of Compound Subject in Subject Verb Agreement:   A compound subject consists of two or more nouns ( Ram and Sita, cowboy and cowgirl), pronouns (your and I, he and she), or noun phrases (a basket of eggs, a layer of dirt). Together, they form the subject of a sentence.

A) If the two subjects are joined by and, the verb will be plural. e.g.

• He and she were present in the function. 

In the question : -

1. Neither the Principal nor the teachers is present in the function.

The correct form of the above sentence is :

Neither the Principal nor the teachers were present in the function.

In this sentence , when two subjects are connected by or, either...or, neither...nor, and not only...but also, the subject which is closest to the verb determines whether the verb is singular or plural. Usually, the plural subject is placed near the verb (it means, if one subject is singular and the other is plural, the plural subject will be placed near the verb and the verb will be plural). So we use were here .

2. Either Ramesh or his friends has stolen the watch.

The correct form of the above sentence is :

Either Ramesh or his friends have stolen the watch.

In this sentence , when two subjects are connected by or, either...or, neither...nor, and not only...but also, the subject which is closest to the verb determines whether the verb is singular or plural. Usually, the plural subject is placed near the verb (it means, if one subject is singular and the other is plural, the plural subject will be placed near the verb and the verb will be plural). So we use have here .

Thus , the Correct Option is D , which is 1. Neither the Principal nor the teachers were present in the function. 2. Either Ramesh or his friends have stolen the watch.

Subject-verb agreement : - Subject-verb agreement is the grammatical rule that the verb or verbs in a sentence must match the number, person, and gender of the subject; in English, the verb needs to match just the number and sometimes the person . Subject-verb agreement, also called “subject-verb concord,” refers to matching the subject and verb of a sentence in tense, aspect, and mood (abbreviated as TAM), which translates to number, person, and gender.

Usage of Compound Subject in Subject Verb Agreement:   A compound subject consists of two or more nouns ( Ram and Sita, cowboy and cowgirl), pronouns (your and I, he and she), or noun phrases (a basket of eggs, a layer of dirt). Together, they form the subject of a sentence.

A) If the two subjects are joined by and, the verb will be plural. e.g.

• He and she were present in the function. 

In the question : -

1. The leader and patron have arrived.

The correct form of the above sentence is :

The leader and patron has arrived.

In this sentence , when two nouns refer to the same person or thing, take, singular verb . So we use has here .

2. Ram and Rahim is best friends.

The correct form of the above sentence is :

Ram and Rahim are best friends.

In this sentence , the two subjects are joined by and, the verb will be plural . So we use are here .

Thus , the Correct Option is B , which is 1. The leader and patron has arrived. 2. Ram and Rahim are best friends.