【題目】With such a tight schedule, everyone will have to go all out if they _____________ the task.

A. have completed B. would complete

C. will complete D. are to complete

【答案】D

【解析】

考查時態(tài)。句意：時間安排如此緊張，如果他們要完成這個任務，每個人都要全力以赴。在條件狀語從句里應該使用一般現(xiàn)在時代替將來時，所以if條件狀語從句中使用be to do sth。故D項正確。

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