20．　　　 , he knows quite a lot about football, more than you can imagine!

　　　 A．As he is a child　　 B．Child as he is　　　 C．As a child　　　　　　 D．A child as he is

19．Studies show the electronic devices people have made much use of 　　　　music may be causing hearing losses.

　　　 A．enjoy　　　　　　　　　 B．enjoying　　　　　　　 C．to enjoy　　　　　　　 D．enjoyed

18．Since you have practiced so much in driving, there　　　 be any difficulty in passing the road test.

　　　 A．mustn’t 　　　　　　 B．shouldn’t　　　　　　 C．shan’t　　　　　　　　 D．needn’t

17．After　　　 seemed to be hours of waiting in line, I finally got my turn to take the oral exam.

　　　 A．that　　　　　　　　　　 B．it　　　　　　　　　　　　 C．what　　　　　　　　　 D．which

16．It’s true that the old road is less direct and a bit longer. We won’t take the new one,　　　 , because we don’t feel as safe on it.

　　　 A．though　　　　　　　　 B．therefore　　　　　　 C．too　　　　　　　　　　 D．while

15．Many students want to know how the differences between American English and British English　　　 .

　　　 A．came up　　　　　　　 B．came about　　　　　 C．came in　　　　　　　 D．came out