问题描述：
1.Please do it ___ you have been shown
2.He looks ____ he needed more sleep
3.He could not come ____ he was ill
4.He is explaining carefully ____ they will understand
5.He was ____ happy ____ he began to sing
6.It is ___ a fine day ____ i am going for a walk
7.He will help you _____ you ask him
8.She's going to miss that train ____ she hurries
9.He went ahead with his plan ____ all the experts advised him against it
10.Tired _____ he was ,he did not stop
2.He looks ____ he needed more sleep
3.He could not come ____ he was ill
4.He is explaining carefully ____ they will understand
5.He was ____ happy ____ he began to sing
6.It is ___ a fine day ____ i am going for a walk
7.He will help you _____ you ask him
8.She's going to miss that train ____ she hurries
9.He went ahead with his plan ____ all the experts advised him against it
10.Tired _____ he was ,he did not stop
问题解答：
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