这道题里为什么选a having been canceled.不选had been canceled All flight___because of the...这好像是被动主动那块的知识点吧 那为什么要用having呢

______for weeks ,she could drive the bus.A.To be trained B.Having trained C.To have trained D.Having bee trained 为什么选A _many times,he finally understood it!A.Told B.Telling C.Having told D.Having bee..._many times,he finally understood it!A.Told B.Telling C.Having told D.Having been told!选哪个带上解释,分析成分! I am a bee yesterday a bee bit Mike _____ face.A on her B in the C on the D in her选哪个?为什么? Either of the children ()quite capable of looking after the baby.A.are B.be C.is D.have bee为什么选d 不选c she's happy like a bee 为什么不加s how about having a cup of milk 为什么用having ----a reply,he decided to write agqin.A.not receiving B.not having C .having not received 选什么,为什么 we__a meeting these days A.have B.had C.are having D.wrer having为什么要选这个答案? honey is to a bee what milk is to a cow.是什么从句为什么用what连接 It was such a great fun having attending your birthday party.其中的having attending为什么having要其中的having attending为什么having要用进行时? you can hear a bee 翻译 There is a bee in our classroom “have a bee in one`s being a busy bee all day. 这道题里为什么选a having been canceled.不选had been canceled All flight___because of the...这好像是被动主动那块的知识点吧 那为什么要用having呢 They _____ supper when we _____ into the room.A. are having…went B. were having…go C. were having…went D. are having…go为什么不选D He was more or less disappointed at __ more guests.A.not having B.there not having C.not having been D.there not having been选哪个?为什么?