Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Change in Exclamatory Sentence:

If the direct command ends with an exclamation mark, we change this to a full stop in the indirect command. We use the reporting verbs exclaimed, praised, cried out, applauded, regretted, wished, desired etc. With exclaimed we generally use an expressions for feelings such as exclaimed with fear or joy etc.We also use the conjunction that to introduce the reported sentence and change to an appropriate past tense.

• "Go away!" said Raveena. (Direct Command)
• Raveena told me to go away.  (Indirect Command)

In the question : -

They said , " How ! Happy we are here ! " .

The Indirect speech of the above sentence is :

They exclaimed with joy that they were very happy there .

While converting into Indirect speech , firstly how shows happiness or joy so we use exclaimed with joy and then the we pronoun converts into they according to first person , then the simple present changes into simple past means are is converted into were , then here converts into there .

Thus , the Correct Option is C , which is They exclaimed with joy that they were very happy there .

Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Change in Exclamatory Sentence:

If the direct command ends with an exclamation mark, we change this to a full stop in the indirect command. We use the reporting verbs exclaimed, praised, cried out, applauded, regretted, wished, desired etc. With exclaimed we generally use an expressions for feelings such as exclaimed with fearor joy etc.We also use the conjunction that to introduce the reported sentence and change to an appropriate past tense.

• "Go away!" said Raveena. (Direct Command)
• Raveena told me to go away.  (Indirect Command)

In the question : -

My friend said , " Alas ! My grandmother is no more " .

The Indirect speech of the above sentence is :

My friend exclaimed with grief that his grandmother was no more .

While converting into Indirect speech , firstly alas shows sorrow or sadness so we use exclaimed with grief and then the my pronoun converts into his according to first person , then the simple present changes into simple past means is is converted into was , then the objective part grandmother no more  .

Thus , the Correct Option is A , which is My friend exclaimed with grief that his grandmother was no more .

Direct speech : - Direct speech is used to report or rather repeat the words spoken by the speaker or writer in the way it is told by the speaker .

Indirect speech : - Indirect speech is the way in which you convey what someone said to another person, not necessarily using the exact words of the speaker.

Change in Exclamatory Sentence:

If the direct command ends with an exclamation mark, we change this to a full stop in the indirect command. We use the reporting verbs exclaimed, praised, cried out, applauded, regretted, wished, desired etc. With exclaimed we generally use an expressions for feelings such as exclaimed with fear or joy etc.We also use the conjunction that to introduce the reported sentence and change to an appropriate past tense.

• "Go away!" said Raveena. (Direct Command)
• Raveena told me to go away.  (Indirect Command)

In the question : -

1. The boy said to me , " Good morning ! " .

The Indirect speech of the above sentence is :

The boy wished me good morning . While converting into Indirect speech , firstly the sentence in inverted commas shows greeting so we uses wished and then the objective part good morning .

2. He said , " What a charming sight !"

The Indirect speech of the above sentence is :

He exclaimed with surprise that the sight was very charming . While converting into Indirect speech , firstly what is converted into exclaimed with surprise as it shows astonish expression and then the objective part charming sight .

Thus , the Correct Option is B , which is 1. The boy wished me good morning . 2. He exclaimed with surprise that the sight was very charming .