第1个回答 2013-01-20
1. I spend half an hour listening to music every day.
It takes me half an hour to listen to music every day.
2. He spends two hours doing homework every day.
It takes him two hours to do homework every day.
3. He spends two hours on homework every day.
It takes him two hours on homework every day.
第2个回答 2013-01-20
1.i spend half an hour in listening to music every day. it takes me half an hour to listen to music everyday.
2.he spends 2 hours in doing his homework everyday. it takes him 2 hours to do his homework every day.
3.he spends 2hours on his homework everyday. it takes him....
第3个回答 2013-01-20
I spend half an hour listening to music every day.
He spends two hours doing homework every day.
He spends two hours on homework every day.
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