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.大哥大姐帮帮小弟吧..

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.大哥大姐帮帮小弟吧..
25.But for your help we ______ in the experiment.
A.hadn’t had succeeded
B.didn’t have succeeded
C.couldn’t have succeeded
D.can’t have succeeded
26.-- "Why didn't you buy a new car?"
--"I would have bought one if I__________enough money."
A.had
B.have had
C.would have
D.had had
27.His advice that we_____________the other groups to a friendly competition was refused.
A.challenge
B.shall challenge
C.would challenge
D.will challenge
28.If a better material ________,the strength of the part would have been increased.
A.had been used
B.had been using
C.being used
D.using
29.They made a request that the problem ___________ at the meeting.
A.discussed
B.is discussed
C.would be discussed
D.be discussed
30.It is demanded that he____________the truth.
A.tells
B.will tell
C.told
D.tell
31.How well the coat fits!
A.陈述句
B.疑问句
C.祈使句
D.感叹句
25 C but for 在句中,要用虚拟语气.
26 D 对过去的事情进行假设,用had
27 A 建议,命令,要求等次放在句中用虚拟语气
28 A 对过去的事情进行假设,用had
29 D 建议,命令,要求等次放在句中用虚拟语气,问题不能自己讨论,所以是被讨论 be discussed
30 D 建议,命令,要求等次放在句中用虚拟语气
31 D 这个是以how引导的感叹句,结构:How+形容词(或副词)+主语+谓语+其它成份.还有一种感叹句式以what引导的.结构:what+(a/an)+形容词+名词+主语+谓语+其它成份.