Khoanh câu trả lời đúng và giải thích vì sao lại chọn đáp án đó 1. What are you going to do?I don't know.I haven't made .............my mind yet A. on B.at C.in D. up 2.It's very careless ...............you to leave the books on the floor A. for B.at C.of D. with 3.He hates......to do something by others a.beging to ask B.asking C.beging asked D. to ask 4.Let's go camping in the mountanin...........? A. do we B. can we C.will we D. shall we 5.Deaf-mutes can......speak......hear A. both..and B.neither.....nor C. not only.....but also D. either..or 6.Did you succeed............... the problem? A. to solve B. on solving C. in solving D. solving