为什么选A,不选B或C

解释一下为什么不选A或B或C 为什么选A不选B或C 为什么选A,不选B或C 为什么不选A或C呢. 为什么不选c或A 为什么选C 而不是A或B 物理第10题,我知道选C,为什么不选A或B? _______ makes mistakes must correct them.A. Who B. Anyone C. Whoever D. Anybody为什么不选B或D He was born on a very cold night _A_ December A of B in c on答案为什么选A而不选B或C? Jane,come here.Do you know how to ____ the coffee machine?A.control B work C manage D try为什么选 B,不选A或C This is my____dictionary.A.sister Mary B.sister's C.sister,Mary's D.sister's Mary's为什么选C,不选B或D. Jane walked across the stress,with her cellphone（ ）to her ear.A.pressed B.having pressed C.being pressed D.pressing 为什么不选B或C? 第5题,要为什么为什么不选B或C The guide's job is .the visitors around the places of interest.A.showing B.shew C.showD.shown 为什么选A不选C或to show 为什么不选A或C 英语问题Which_did you enter for in the sports meet?A.competitions B.incidents C.sports D.events Who will go with him?A.I will B.I C.Me D.Me will句中提问的是主语,为什么不选A或B her mother wouldn't let her marry anyone __family was poor.A.that B.which C.whose D.who为什么不选A或 B This is my____dictionary.A.sister Mary B.sister's C.sister,Mary's D.sister's Mary's为什么选D,不选B或C.是我看错答案了，答案选的是C,B为什么不对呢？