Giúp mình với các bn ơi

15. The bus was full of smoke. We couldn't get C. over A. off В. of D. up on Saturday. 16. Anna is leaving tomorrow and coming. C. for A. in B. back D. to 17. When I touched him on the shoulder, he turned С. in A. round B. up D. on 18. I was so tired this morning that I couldn't get C. ...