19. A. look after B. look at C. look like D. look the same E, look up
18. A. How long B. How old C. How much D. How often E. How many
17. A. That's all right B. That's right/Right C. All right
D. right E. That's all
16. A. there are B. there is C. have D. Has
15. A. some times B. sometime/some time C. some time D. sometimes
14. A. on B. at, in, at, at, on
C. at, at D. on. on. at E. in. on
13. A. studied, learned B. studying
C. study; learn D. learn/study, learn
12. A. problem; question B. problem, questions
10. A. carrying B. bring C. taken D. get
Key 2: 11. A. Each. Every B. each
9. A. also B. too