选择不同类的单词。
（1）A.library B.playground C.computer D.washroom
（2）A.dinner B.canteen C.breakfast D.lunch
（3）A.white B.shoes C.shirt D.sweater
（4）A.math B.music C.jeans D.art
（5）A.fourteen B.gray C.eight D.twenty
--- 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
--- Mary, let’s _________ animals. --- All right.
A. make B. makingC. makes