[题目] 新多益必考单字600 L10 p63 Q17

楼主: pression (...)   2014-05-04 23:22:12
书名:新多益必考单字600
版本:4/e
页数:p.63 第17题
题目:
Don't rush to the copier as soon as the final revision is complete.
____ each document carefully beforehand.
(A) Proof
(B) Proofs
(C) To proof
(D) Porrfing
疑问:为什么是A而不是C
这是祈使句的用法吗?还是其它文法呢?
   希望版上的高手能帮忙解惑, 感谢!

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