题目内容：

大学英语精读book1 第一单元
1.complete the following sentences,using the words in brackets.
ex) the police said that the taxi driver was _______ - he should have slowed down.(fault)
= the police said that the taxi driver was at fault - he shold have slowed down.
1) i have warned you __________ to keep away from drugs.(over)
2)if you try to learn too many things __________,you may get contused ( time)
3)we won't know if the plan will work until we _________.(practice)
4)you can't learn english well without _________idiomatic ways of saying things.(watch)
5)peter has tride many things with no particular success,but he is __________an incapable person.(means)
6)can you turn the music down,please?i can't_________my work.(concentrate).
7)__________teaching at he university,professor wilson also works as a legal adviser to a high-tech company.(addition)
8)if you come to my office,i'll tell you the story ___________.(detail)