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

—You ________home half an hour earlier.

A．should have left B．must have left

C．should leave D．must leave

【答案】A

【解析】

試題解析：

should have done :本來應(yīng)該做某事；must have done：一定做過某事/肯定做過某事

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