17. She doesn’t like coffee, does she ?
A. Yes, she doesn’t B. No, she does C. Yes, she did D. No, she doesn’t
18. I won't go to bed …………………..I finish my homework.
A. until B. when C. while D. since
19. Is this book ………………….. ? Yes, it's mine.
A. you're B. yours C. you D. your
20. …………………..do you come to school ? By bus
A. How B. What C. By D. When