题目内容
David helps his mother with the housework every Saturday for about______.
- A.one and half hours
- B.a half and an hour
- C.an hour and half
- D.one and a half hours
D
一个半小时应表达为:an hour and a half或one and a half hours。
一个半小时应表达为:an hour and a half或one and a half hours。
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