问题

Who’s that man riding along the street. Is it Tom-It ______ be Tom. I saw him in the library just now.

A:must
B:may
C:can’t
D:shouldn’t;

正确答案是：

同类题型

It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it．

I bought my son a bike, _________ he like it a lot.

146. What a pity it is that Bob ______ the habit of smoking at such an early age!

_________________ —My friend Tom.

Pandas are very _____ and ______. So we all like them.