当你想知道那位男孩是谁,应该说:____________________ A. Who’s that boy? B. Who’s that girl?
There are too many old newspapers. _____throw them away.
Betty is _____artist. She never wears____ _ uniform.
We often _____hiking at the weekend.
The boy was very tired_______ he went to bed early.
There are ______dictionaries in the library. We need some more.