语法题目请分析为什么不选A谢谢“Have u seen David recently?""No.I guess he ( )away on vacation."A.must has beenB.must beC.might have been D.may has been

语法题目请分析为什么不选B谢谢Do u smell smoke?Yes.Something ( ).A.should have burnedB.must have burnedC.should have been burningD.must be burning 语法题目请解释分析谢谢为什么不选Cby the time the course ends ( )a lot about culture.A.we'll learnt B.we r leaving C.we have learnt D.we'll have learnt 语法题目请分析为什么不选A谢谢“Have u seen David recently?No.I guess he ( )away on vacation.A.must has beenB.must beC.might have been D.may has been 语法题目请解释分析谢谢为什么不选CHe ( )many experiences he ever ( )in his childhood.A.gradually forget ...had B.is gradually forgetting...had C.was gradually forgetting...had hadD.have gradully forgotten ...had 语法题目请解释分析谢谢为什么不选Ayour mother ( ) for u everywhere.where have u been?A.had looked B.has been looking C.looked D.was looking 语法题目请解释分析谢谢为什么不选BMr.Wilson asked me if these islands ( ) Italy.A.have been belonged to B.r belong to C.belong to D.belonged to 语法题目请解释分析谢谢为什么不选Awhat ( ) do with the car?A.r u about to B.will u be going to C.r u going to D.have u been to 语法题目请解释分析谢谢为什么不选Bup to now the earthquake ( )no serious damage.A.would do B.had done C.did D.has done 语法题目请解释分析A,D里选哪个谢谢By he time i returned ,u ( )this book.A.would have finished B.would finishC.will be finished D.should have finished 语法题目请分析这种有逗号的句子什么属性谢谢Beside( ),he had to pay back all the money he had receiced from bribes.A.jailingB.being jailedC.to be jailed D.jailed为什么不能选C 高中化学题目,请写分析原因,谢谢! PUOTO16答案是D，但不知道为什么？ We looked everywhere for the keys, but they are nowhere __________.A to find B to have foundC to be foundD being found这道题答案为什么选C, 而不选D, 请分析一下,谢谢. 为什么用过去时I will have watch_____because it doesn't work. A.repair B.to repair C.repairing D.repaired 答案是D请分析一下不选B的理由 谢谢～ If I ----plan to do anything I wanted to , I'd like to go to Tibet through as much of it as possiblA would,B could,C hav to D,ought to这题答案是B,为什么不选A?从语法角度讲A也行得通啊请给详细而准确分析,谢谢请问如果 英语,基础语法,为什么不选A 为什么不选a这部分语法 高中化学题目,请写出分析. 答案：A,D急!为什么我的图片传上去后,不显示? A computer does only what thinking people ________. (Unit3-4) 为什么填have it do不填have it done?请分析一下句型或语法.既然people是主动,那么it就应是被动.而用done就指it被做,所以我还是不懂为什么不用done.