Who is it up ______ decide whether to go or not? (为什么不选

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Who is it up ______ decide whether to go or not? (为什么不选B,选A?)

A.to to B.to
2. We saw the bird flap its wings and ______ away. (为什么不选C,选A)
A.fly B.flied C.flew D.flying
3. _______ ,ice will be changed into water. (为什么不选A,选B)
A.Heating B.Heated
4.Don't leave me _______ alone at home.(为什么选A,不选B)
A.stay B. staying
5.The young man told the doctor that he didn' t need ______ his heart _____ . (为什么不选A,选B)
A.having ,checked B.to have ,checked
6.Try ______ the back door if nobody answers the front door.
A.to knock at B.knocking at
7.________ many times ,but he made the same mistake again.(为什么不选A,选B)
A.Having been told B.He had been told

1 up to固定搭配 to decide不定式infinitive,A
2 see sb.do sth 看见某人（做完）某事,不是see sb.did/done sth.（see sb.doing sth 看见某人正在做某事） A
3 passive 被动.冰被加热后变成水（主语是冰）B
4 leave sb.do sth固定搭配 A
5 need to do sth.固定搭配 have sth.done passive被动 B
6 A try to do sth.固定搭配 A
7 past perfect 过去完成时,having been told 是现在完成.B

初中英语选词填空 Who is it up ____ decide whether to go or not?A.to It is not easy to decide whether a report is true or not.这句英 it is impossible to decide whether or not you like something It is impossible to decide whether or not you like sth.u____ it is impossible to decide on their whether or not you like It is up to you to decide __you are go there ,by air or by r I could not decide whether or not to go to the party. Who is it up_______decide whether to go ro not?A.to do B.to I__(give) five minutes to decide whether I should go or not 英语翻译It is up to you to decide whether it is true. It will be up to the jury to decide whether she is innocent I'm not sure whether he__(decide) where to go