Correct the given sentence gramatically.

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

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.
The watchman said, "Thief! Thief! Catch him!"

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. 
I will wash the car every Sunday.

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
Some of these
X-height of more than
Y-2000 feet above the sea
Z-rocks rise to the

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
Evidently it was too
X-of a deadly-looking cobra or
Y-two we saw no reptiles
Z-dry for game, and with the exception

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
The faculty or power of using one's will

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
Complete with regard to every detail