1 . I had just set down to work _________ I noticed something moving on the wall. (用适当的词填空)

2 . ---Are you happy with this lab?
---Not a little. We can’t have _______.

A．a worse one

B．a nicer one

C．such a worse one

D．such a nicer one

3 . --Whenever I come to visit, he is always watching TV.
--You’re really observant. He can’t help but ________ some TV during meals or before bed.

A．watch

B．watching

C．to watch

D．watched