Question

1. They watched that movie. (make yes/no interrogative).

2. He built a nice building. (make it interrogative using 'what').

3. He is competent for the post. (make it negative without changing the meaning of the sentence).

Answer 1

Answer:

1. Did they watch that movie?
2. What did he build?
3. He is not incompetent for the post .

It is your answer.

Answer 2

Answer:

Have they watched that movie?

What did he build?

He isnt incompetent for the post.