13.(　 ) We have so many kinds of guitars for you ________.

　　 A. to choose　　 B. to choose from　 C. to be chosen　　 D. to be chosen from

12.(　 ) The number of the students in our school _______ about eight hundred.

　　 A. are　　　　　 B. were　　　　 C. is　　　　　 D. be

11.(　 ) Sandy was too nervous _______ the teacher’s question.

　　 A. answer　　　 B. to answer　　 C. answering　　 D. answers

10.(　 ) Food on Mars will not be as ________ as they are on Earth.

　　 A. tasty　　　　 B. taste　　　　 C. tastier　　　 D. tastes

9.(　 ) You can hardly imagine a man ________ friends with a volleyball.

　　 A. make　　　　 B. making　　　 C. to make　　　 D. made

8.(　 ) The surface of Mars is ______like the surface of Earth than____ planet in our solar system.

　　 A. much; the other　　 B. much; any other　 C. more; the other　　 D. more; any other

7.(　 ) “What do you _______ her speech?” “She spoke for one hour but didn’t say much.”

　　 A. think of　　 B. think up　　 C. think over　　 D. think about

6.(　 ) The smoke was so thick that I was having trouble _______.

　　 A. to breathe　　 B. in breath　　　　　 C. with breathing　　 D. breathing

5.(　 ) I think English is hard for me. _______, I don’t know the grammar.

　　 A. At first　　　 B. First of all　　　　　 C. Not at all　　　　 D. On the other hand

4.(　 ) The boy’s growing _______ because he keeps eating.

　　 A. fat and fat　　 B. more and more fat　 C. fatter and fatter　 D. fatter and fattest