( ) （3）在你有困难的时候，警察叔叔帮助了你，你应该对警察叔叔说：
A.Thank you very much! B.All right C.OK!
--- Mary, let’s _________ animals. --- All right.
A. make B. makingC. makes
The hens _________ swim.
A. can B. can’t C. are
The little duck is called _________.
A. chick B. gosling C. duckling
The _________ are in the pond.
A. goose B. gooses C. geese
There are some gosling ______ the pond.
A. on B. In C. of