16、A: The children played happily in the zoo yesterday.?

B: The children 　enjoyed　 　themselves　 in the zoo yesterday.  ?

15．Please help yourself to some fish, Lucy.?

三、同义句转换?

14．Nothing is difficult if you put your heart into it.  ?

13．The old man can neither read nor write.  ?

12．She asked us to help each other.

11．Is there anything interesting in the newspaper?  ?

10．Look at 　those　 books. Are they yours?(that)

9．I don't think this is my frisby, though it looks like 　mine　.(I)  ?

8．Please take care of 　yourselves　, boys and girls.(you)?

7．These skirts are 　hers　. Yours are over there.(she)?