Parents often have their children_____ little housework so that they can have mo

题干

Parents often have their children_____ little housework so that they can have more time______.

A．doing; studying	B．done; studied
C．to do; to study	D．do; to study

上一题下一题 0.64难度单项选择更新时间:2011-08-22 10:39:08

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