20. It's a lovely dress but it's too expensive. I can't______ it.
A. spend B. pay C. afford D. cost
19. They are busy______ ready for the exams.
A. get B. got C. to get D. getting
18. She asked them______ things about.
A. not to litter B. don’t litter C. not litter D. no litter
17. A: Could you come, please? I want some Help.
B: ______.
A. Yes, I could B. You' re welcome
C. Sure. I'm coming now D. That’s right
16. A: How do you get on with your classmates?
A. Very well B. Well done C. That's OK D. I'm well
15. A: What's the date today?
A. It's Thursday B. The third, I think
C. I'm 16 D. It's a fine day
14. We should do something to stop sandstorms______ happening again and again.
A. from B. on C. by D. to
