题目内容
________ that the door is locked before you leave the roan.
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A．Making sure
B．Make sure
C．Be sure
D．To make sure
答案：B
解析：
提示：
解析：
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【巧解导析】此处须填入一个动词做谓语，整个句子是一个祈使句，故答案为B．C项Be sure that表示“某人相信，确信”．整个句子的意思是“在你离开房间之前请弄清楚房门已锁上”． |
提示：
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【巧解点悟】make sure意为“确保，弄清楚”，常有make sure that…和make sure of＋n. 等搭配，另外有be sure about/of用法，意为“有把握，确信”．而 be sure to＋v. 意为“务必”，“一定”．如：Be sure to come on time. |
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