实践：

　　1. Jack's father is ______ doctor.

　　A. a

　　B. an

　　C. some

　　D. /

　　2. He often does some washing ______ Sunday.

　　A. at

　　B. in

　　C. on

　　D. by

　　3. This room is ours, and that one is ________.

　　A. they

　　B. them

　　C. their

　　D. theirs

　　4. Tom is _______ boy in his class.

　　A. tall

　　B. taller

　　C. tallest

　　D. the tallest

　　5. "Can you come here next Friday?"

　　"Sorry, I _______."

　　A. can't

　　B. mustn't

　　C. needn't

　　D. may not

　　6. Did you ______ the football match last night?

　　A. see

　　B. watch

　　C. look

　　D. read

　　7. There ________ many high buildings in this city.

　　A. is

　　B. are

　　C. have

　　D. has

　　8. John has two brothers. One is an artist, ________ is a scientist.

　　A. the others

　　B. another

　　C. the other

　　D. others

　　9. The man asked the policeman _______.

　　A. let hime to go

　　B. to let him to go

　　C. let him go

　　D. to let him go

　　10. Please _______ page 54 and read lesson Twelve.

　　A. turn to

　　B. turn into

　　C. turn in

　　D. turn on

　　11. He did not go home ______ he finished the work.

　　A. of

　　B. because

　　C. until

　　D. since

　　12. The old man was _______ tired that she couldn't walk on.

　　A. so

　　B. too

　　C. very

　　D. quite

　　13. We are busy ________ our lessons these days.

　　A. prepare

　　B. preparing

　　C. to prepare

　　D. prepared

　　14. I'll go with you if I ________ free tomorrow.

　　A. will be

　　B. shall be

　　C. am

　　D. was

　　15. Do you know ________?

　　A. where does he live

　　B. where he lives

　　C. he where lives

　　D. he lives where