Correct the given sentence gramatically.

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

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

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

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

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

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.
Mother shall return _____ an hour.

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.
It is mainly due to Peter's lethargy that the plan fell _____.

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No error'.
The student asked me if (1)/ I knew that Kalidas was the greater (2)/ than any other poet. (3)/ No Error (4)

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No error'.
Ritika decided to get up early (1)/ to wear a nice dress (2)/ and visit her aunt. (3)/ No Error (4)