英语,1.I planned（ A ）the task before last Sunday,but failed be

英语,
1.I planned（ A ）the task before last Sunday,but failed because of a bad cold.
A.to finish B.to have finished
C.finishing D.having finished
2.Tom has been writing letters all morning,but he should finish them by now,（ B
A.has he B.hasn't he
C.should he D.shouldn't he
3.We can make some changes in the plan（ C ）you find anything improper.
A.in case B.unless
C.so that D.even though
4.The manner in which he talked reminded me（ ）his grandfather.
A.in B.by
C.of D.towards
5.He has made another wonderful discovery,（ D ）of great importance to science.
A.I think which it B.which I think is
C.that I think is D.which I think it is
6.It's 10∶00 a.m.Mr.Johnson（ D ）home now,for he told me that he would meet me in his office at this time.(must be表肯定推测,can be表不太有把握的推测; can’t be是must be 的否定.而mustn't be表示为禁止,不允许（一般运用在法律中）表推测中绝对没有mustn't be这个用法,这是绝对错误 单mustn't的意思是禁止
A.must be B.mustn't be C.can be D.can't be
7.If only we（ B ）as we were told!This would never have happened.
A.did B.had done C.would do D.would have done
8.The key（ A ）success is hardworking and persistence.
A.on B.for C.to D.of
9.For nearly three hours we waited for the decision,only（ C ）to come again the next day.
A.to tell B.to be told C.being told D.telling

1,2,6,7题应该是正确的.第3题选A,你应先弄清楚主从句的关系,我认为是一种条件关系,译为“如果你找到一些不合适的,我们能在计划中做一些改变.” 第4题选C,remind sb.of sth.是固定搭配.第5题选B,这是一个非限制性定语从句,which指代前面整个句子,又做I think 后宾语从句的主语.第8题选C,the key to sth.是...的关键,就象the answer to the question结构一样.第9题选B,only to do为固定结构,但we 与tell 的关系为被动,故用only to be done.