521. I don’t think it ___ be true.

A. must　　　 B. can　　 c. may　　 D> has to

520. Please change a jacket for me. This one is ___ small for me.

A. too much　　 b. much too　　 C. enough　　 D. such

519. She is the only one ___ was born in 1994 in our class.

A. that　　　 b. who　　 C. whom　　 D. he

518. You ___ talk loudly in the library.

A, needn’t　　 B. mustn’t　　 C. can’t　　 D. not

517. It _____ be Ann’s homework. But I’m not sure.

A. can　　 b. should　　 C. may　　 D. must

516. It _____ be Ann’s homework. She doesn’t go to school today.

A. must　　 B. mustn’t　　 C. can　　 D. can’t

515. He has ___ friends. He likes to stay at home.

A. a few　　 B. a little　　 C. few　　 D. little

514. The accident ___ them ____ coming to the party in time.

A. stopped, from　　 B. stoped, from　　 C. stopped, of　　 D. stops, from

513. I met the scientist _____ gave us a talk last week.

A. he　　 B. which　　 C. who　　 D. what

512. He would rather study at home ____ go out to play soccer.

A. then　　 B. not either　　 C. and　　 D. than