The woman is seventy, but she looks so __________.
A. tall B. young C. thin
--- You are very clever! --- _________ .
A. No, I’m not. B. It’s right.C. Thanks.
--- What can the dogs do? --- _________
A. They are three. B. They can run. C. They are brown.
I know _________ mother is a duck.
A. they B. their C. them
There _________ a lot of sheep over there.
A. is B. isn’t C. are
The bear has four _________.
A. baby B. babies C. babys