Which one of the following words is in singular form?

1.Find the correctly spelt word.

2.Our task had been completed before sunset. Change it into active voice.

3.Select the pair which has the same relationship of-GRAIN : SALT ::

4.The spelling of which word is not correct?

5.I put the table-cloth —— the table.

6.The terrorists killed the guard ——.

7.The word '$bright^{\prime} in the sentence$ 'It was a bright, sunny $morning^{\prime} is$ –

8.He is careless —— his health.

9.Shakespeare is a great '$dramatist^{\prime}. The under lined/quoted word is$ —

10.Spelling of which word is not correct?

11.Identify the word which remains the same in its plural form.

12.Identify the imperative sentence.