The traffic light is yellow, you may __________.A. stop B. wait C. go
--- 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