( ) 15. I _______ my hometown for a long time. I really miss it.

A. left B. went away from C have left D. have been away from

( ) 16. How much did you _____ for the doll?

It _______ me thirty yuan.

A. pay; cost B. pay; paid C. cost; cost D. cost; pay

( ) 17. It`s very friendly ______ him to help me when I`m in trouble.

A. for B of C. to D. with

( ) 18. The more ______ you are, the _____mistakes you`ll make.

A. carefully; fewer B. careful; less C. careful; fewer

( ) 19. Food safety is becoming ______ than before. More and more people care about it.

A. more interesting B. less interesting

C. more important D. less important

( ) 20. ---A number of volunteers______ willing to teach in China`s rural areas.

---Yes, the number is getting_______.

A. is; bigger and bigger B. are; bigger and bigger

C. is; more and more D. are; more and more

( ) 21. This morning I had hardly got to my school when it_____ to rain.

A. had begun B. was beginning C. began D. begins

( ) 22. — You have found your lost umbrella, haven’t you?

—Yes. I _____ it behind the door this afternoon.

A. have found B. will find C. found D. find

( ) 23. Ten minutes ago, there______ an eraser, a pen and some books on the desk.

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