从B中选择合适的答案回答A的问题，把字母编号填到前面的括号中。(10分)
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.
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