题目内容
It took us ________ to finish the experiment on the monkey
| A.an hour or two | B.one or two hour |
| C.one and a half hour’s time | D.one hour and a half time |
A
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题目内容
| A.an hour or two | B.one or two hour |
| C.one and a half hour’s time | D.one hour and a half time |