651. While ____ to the radio, the girl couldn’t help laughing.

A. listened　　 B. listening　　 C. having listened　　 D. listens

650. On the highway, buses or cars are not allowed to ____ the passengers.

A. pick up　　 B. make up　　 C. get up　　 d. send up

649. She was weak. ____ , she insisted on doing the heavy work.

A. Tough　　　 B. However　　　 C. So　　 D. But

648. Not only his parents but also he ___ to America.

A. have been　　 B. has been　　 C. have gone　　 D. has gone

647. Tom is _____ boy.

A. an eight –years-old　　 B. a eight-year-old　

C. an eight-year-old　 D. a eight-years-old

646. We were told that light ____ much faster than sound.

A. travels　　　 B. traveled　　　 C. was　　 D. will be

645. Jack___ in the accident yesterday.

A. hurt　　 B. hurts　　 C. was hurt　　 D. is hurt

644. How long ____ your father ___ there before he came here?

A. had, worked　　 B. has, worked　　 C. have, worked　　 D. did, work

653. Get up early tomorrow, ___ you can’t get there before seven.

A. so　　　 B. but　　 C. or　　 D. though

652. In the street I met the scientist ___ gave us a talk last week.

A. he　　 b. which　　 C. who　　 D. what