______the problem clearly, Mary has to look for lots of information.
Jim, _____ look outside. Look at the map.A. doesn’tB. don’tC. isn’t
---Let’s go to see the action movies.---________________.A. Yes, we do.B. No, we don’t.C. That sounds exciting.
Elephants are very friendly and they like______ grass.A. eatB. to eatingC. to eat
Shanghai is bigger than _____ city in China.A. any B. other C. any other
Listen! Who ____ behind the tree?A singsB. is singingC. singing