Which is the correct sentence?

1.Select the correct passive voice of 'Who is calling me?'

2.Which pair contains a misspelled word?

3.It is dangerous of enter ––– the enemy's camp.

4.Change the sentence : 'He asked me where I had gone the previous $day^{\prime} into direct$ form.

5.Which pair contains a misspelled word?

6.Human nature is wanting –– morale sometimes?

7.Which pair contains a misspelled word?

8.Life is ever veiled ––– mystery.

9.Change the sentence 'She is the best $housewife^{\prime} into positive$ form.

10.Which pair contains a misspelled word?

11.Every applicant seems $\to be sanguine$

12.Change the sentence – 'Suddenly his father $died^{\prime} into complex$ form.