Correct the given sentence gramatically.

Shreya, who she is my best friend, is a singer.

Improve the bracketed part of the sentence.
By rescuing the child from fire, the local resident (added another feather to his cap.)

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
To draw the longbow

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
Spick and Span

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Nebulous

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Meretricious

In the following question, out of the four alternatives, select the word similar in meaning to the word given.
Dodge

In the following question, out of the four alternatives, select the word similar in meaning to the word given.
Mellifluous

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
I will scold him when _____.