Question

change the following into passive voice-
11.The children are laughing at the old beggar.
12.
We shall not have understood the matter.
13. I shall have studied the English tenses.
14.
Doctors have cured many deadly diseases.
15. The army has attacked that city five times.
16.The clerk had not made a mistake.​

Answer 1

change the following into passive voice-

11.The children are not laughing at the old beggar.

12.

We shall have understood the matter.

13. I shall have not studied the English tenses.

14.

Doctors have not cured many deadly diseases.

15. The army has not attacked that city five times.

16.The clerk had made a mistake.

Answer 2

laughed at old begger by childrends