19.　 He became very ______ in science .

A. interesting　　 B. interest　　 C. interested 　　D. so interesting　

18.　 -How many birds can you see in the picture ?　　　 - __________ .

A. None　　 B. No one　　 C. Nobody　 　　D. No　

18. - have you been in this school ?　　 - Since last year .

　 A. How often　 B. How long　　 C. How soon　　　 D. When　

17.　 - Hi, Kate . We’re going to help Grandma Li with her housework this Saturday afternoon .　 -_______.

A. So I am　 B. So do I　　 C. So I do　 D. So am I

16.　 Have you found your ruler ______________ ?

A. already　　 B. yet 　C. only　　 D. but

15.　 He ________ 20 dollars for the dictionary .

A. took　　 B. spent　　 　　　 C. used　　 　D. paid

15. - Hi, Kate .　　 - Hi, Mary. I _________ you are here .

　 A. don’t know　　 B. don’t think　　 C. think　　　 D. didn’t know

14.　 - How many students are there in your school ?

-　　 ________ the students in our school _________ over two thousand .

A. The number of , is　　　　　 　　　B. The number of , are　

C. A number of , is　　　　　　　　　 D. A number of , are　

13.　 He asked me ____________ to his birthday party .

A. to go 　　　B. go　　 C. goes　　　 D. went　

12.　 Hurry up , ___________ we will miss the train .

A. but　　 B. and　 C. or　 D. so