题目内容

How dirty the floor is! You should have someone _____ it at least twice a day.
A．mopB．to mopC．mopping D．mopped
A

试题分析：考查have的用法，have sb do sth意思“让某人做某事”，所以选A，句子意思“地板好脏啊，你本应该让某人一天至少拖地两次”
点评：have的用法是常考内容，只要知道它的用法，have sb do sth意思“让某人做某事”，就很容易选择了
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