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

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
You must (be mistake).

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
What would you like (to do it) for your birthday?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Let something slip through one's fingers

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Gnash your teeth

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