—I missed the first part of the film. It was really a pity.—You home half an hour earlier

问题补充：

—I missed the first part of the film. It was really a pity.

—You home half an hour earlier.

A. should go

B. must have gone

C. should leave

D. should have left

答案：

A. should go

B. must have gone

C. should leave

(答案→)D. should have left

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