选择合适的句子补全对话。(5分)A:Hey, Yang Ling. _________They are swimming.B: Wow, how fast they are! _______________A: No, Wang Bing swims faster, I think. B: ______________________A: Liu Tao swims faster. ___________ B: Oh. Look! ________. He is so happy!
My sister is sick. I must look _____her.
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.