题目内容
四、 单项选择
() 1. Chinese people keep pigs for food,but now some people keep them as pets.
A. used to B. has to
C. had better D. are used to
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题目内容
四、 单项选择
() 1. Chinese people keep pigs for food,but now some people keep them as pets.
A. used to B. has to
C. had better D. are used to