Modals: They are verbs which are used before the main verb to express ability, possibility, obligation, permission, suggestion, request, certainty or necessity.They indicate the attitude, intention and the mood of the speaker.

• They cannot be used alone in a sentence.
• In case of Questions they are used alone.
• They are not affected by the change in person i.e. first, second or third form.
• Present Participle or Past Participle form of a verb is never used with a modal.

Use of Shall:

1. The use of shall in first person denotes a pure future action, while use of shall in second and third persons denotes; promise. determination, threat, or warning. e.g.

    (a) I shall go to market tomorrow. (future action)

In the question : -

1. This time next week I _________ be in Scotland.

In this sentence , shall is the correct modal that can be placed in the blank part as it is used for talking about or predicting the future .

2. ___________ I send you the book ?

In this sentence , shall is the correct modal that can be placed in the blank part as it is used for making offers or suggestions or asking advice .

3. Let's look at it again, __________ we ?

In this sentence , shall is the correct modal that can be placed in the blank part as it is used for making offers or suggestions or asking advice .

Thus , the Correct Option is C , which is 1. Shall 2. Shall 3. Shall .

Modals: They are verbs which are used before the main verb to express ability, possibility, obligation, permission, suggestion, request, certainty or necessity.They indicate the attitude, intention and the mood of the speaker.

• They cannot be used alone in a sentence.
• In case of Questions they are used alone.
• They are not affected by the change in person i.e. first, second or third form.
• Present Participle or Past Participle form of a verb is never used with a modal.

Use of Shall:

1. The use of shall in first person denotes a pure future action, while use of shall in second and third persons denotes; promise. determination, threat, or warning. e.g.

    (a) I shall go to market tomorrow. (future action)

In the question : -

1. What ___________ I do with this spare part ?

In this sentence , shall is the correct modal that can be placed in the blank part as it is used to show politely seek the advice or opinion of the listener about a future decision .

2. They __________ be punished for their transgression.

In this sentence , shall is the correct modal that can be placed in the blank part as it is used to show a reprimand or obligation in a formal way .

3. You ___________ cease this foolishness at once .

In this sentence , shall is the correct modal that can be placed in the blank part as it is used to show a reprimand or obligation in a formal way .

Thus , the Correct Option is D , which is 1. Shall 2. Shall 3. Shall .

Modals: They are verbs which are used before the main verb to express ability, possibility, obligation, permission, suggestion, request, certainty or necessity.They indicate the attitude, intention and the mood of the speaker.

• They cannot be used alone in a sentence.
• In case of Questions they are used alone.
• They are not affected by the change in person i.e. first, second or third form.
• Present Participle or Past Participle form of a verb is never used with a modal.

Use of Shall:

1. The use of shall in first person denotes a pure future action, while use of shall in second and third persons denotes; promise. determination, threat, or warning. e.g.

    (a) I shall go to market tomorrow. (future action)

In the question : -

1. ________ I carry this box into the room for you?

In this sentence , shall is the correct modal that can be placed in the blank part as it is used with first person in interrogative form expresses the idea of knowing the willingness of the other person.

2. You ____________ go to meet him tomorrow.

In this sentence , shall is the correct modal that can be placed in the blank part as it is used with second and third person also expresses compulsion, bindings, or an idea of a  force.

Thus , the Correct Option is C , which is 1. Shall 2. Shall .