When I try to understand ______ that prevents so many Americans from being as happy as one might expect, it seemed to me that there are two causes.

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• 1— Well. I do think the rabbit is a beautiful, gentle animal which can run very fast. — ______.

  A.So it is

  B.So is it

  C.So does it

  D.So it does

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• 2Jane won't join us for dinner tonight and ________.

  A.neither won't Tom

  B.Tom won't either

  C.Tom will too

  D.so will Tom

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• 3It was along the Mississippi River _____ Mark Twain spent much of his childhood.

  A.how

  B.which

  C.that

  D.where

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• 4-I hear Johnson was badly injured in the accident.-________,let's go and see him.

  A.If not

  B.If so

  C.If necessary

  D.If possible

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• 5_____ he will return to his native land.

  A.It is long before that

  B.It is before long that

  C.It won't be long before

  D.It will be long before that

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• 6I don't mind her criticizing me, but _____ is how she does it that I object to.

  A.it

  B.that

  C.this

  D.which

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• 7I'm wondering in which play _____ your brother will appear?  I've no idea of the information of theperformance.

  A.that is where

  B.this is when

  C.it is where

  D.it is that

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• 8It was not until the beginning of the twentieth century ______ to explore space.

  A.did man begin

  B.when man began

  C.that man began

  D.then man began

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• 9— What did he want to know, Jack?— _______ that we would have the picnic on Sunday.

  A.what it was

  B.when was it

  C.whether it was

  D.where it was

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• 10It was _____ back home after the experiment.

  A.not until midnight did he go

  B.until midnight that he didn't go

  C.not until midnight that he went

  D.until midnight when he didn't go

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