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If the staffs hadn't been working hard in the past two years, things so smoothly

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If the staffs hadn't been working hard in the past two years, things so smoothly

If the staffs hadn't been working hard in the past two years, things ________ so smoothly.

[]

A.wouldn't be going

B.will not be going

C.haven't been going

D.don't go

试题答案

答案:A