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5.Itisessentialthatyourapplicationformbackbeforethedeadline.A.mustbesentB.wouldbesentC.besentD.willbesent

题目详情
5.It is essential that your application form _____________ back before the deadline.
A.must be sent B.would be sent
C.be sent D.will be sent
▼优质解答
答案和解析
C.be sent
这里要用虚拟语气,sould be sent而should 通常可以省略,should后面要跟动词原形