---I think he is taking an active part in social work.

----I agree with you ________.

 _______ I met him, I thought he was a serious man.

---They are quiet, aren’t they?

--Yes. They are accustomed ______ at meals.

In our city, citizens have free _____ to the library, which makes it easy for them to read any book they like.

 While cleaning the room yesterday, I _______ an old photo of my mother.

—Were you surprised by the ending of the film?

----No. I ______the book, so I already knew the story.

Although it is _____ to watch programs on TV sometimes, I think people shouldn’t spend all the time watching it.

I can’t send her an invitation. I wish I _______ her new address.

–Sorry, Professor Smith. I didn’t finish the assignment yesterday.

--Oh, you _____ have done it as yesterday was the deadline.

A. must     B, mustn’t      C, should      D. shouldn’t

 It’s time that I ______ home, but I’m enjoying myself, so I will stay here a bit longer.