题目内容
【题目】_______ carefully before you hand in your paper please.
A. Checking B. Check
C. To check D. Checked
【答案】B
【解析】句意:交卷之前请认真检查。before引导的是时间状语从句,前面的祈使句是主句,动词用原形。故选B.
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题目内容
【题目】_______ carefully before you hand in your paper please.
A. Checking B. Check
C. To check D. Checked
【答案】B
【解析】句意:交卷之前请认真检查。before引导的是时间状语从句,前面的祈使句是主句,动词用原形。故选B.