难度：★ 考点：动词时态
1. There a football match and a concert this weekend. Which one would you like to go?
A. is B. are C. will be D. will have
2. In order to eat safely, I think we make some food by ourselves instead of buying some.
A. used to B. prefer to C. had better D. are supposed to
3. If all business goes paperless, at least one million tons of paper will be a year.
A. used B. saved C. copied D. offered
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