If we _________ the earth, we must take action before it is too late.

试卷相关题目

• 1No matter what substance it may be, it is ________ atom.  

  A.resulted from

  B.formed

  C.made up of

  D.made up with

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• 2---- What were you doing when Tony phoned you? ---- I had just finished my work and _____to take a shower.

  A.had started

  B.started

  C.have started

  D.was starting

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• 3Seeing a large crowd at the street corner，I became aware of ______ unusual happening．

  A.anything

  B.something

  C.everything

  D.nothing

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• 4— Isn't it hard to drive downtown to work? — Yes, that's why I ______ to work by train

  A.have been going

  B.was going

  C.have gone

  D.will have gone

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• 5Only when they came ___________.

  A.I left the office

  B.did I leave the office

  C.left I the office

  D.I did leave the office

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• 6Mr Baker is always making _____comments instead of straightforward yes-or-no replies.

  A.ambiguous

  B.unconscious

  C.amateur

  D.punctual

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• 7It was at 5 o'clock __________ the visitors finally arrived at Pudong International Airport.

  A.when

  B.that

  C.before

  D.after

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• 8In the U.S, ______a tip is thought to be polite when paying the bill.

  A.leave

  B.having left

  C.leaving

  D.being left

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• 9Children are excited about the approach of Christmas, _____ may bring great happiness to them.

  A.it

  B.which

  C.what

  D.that

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• 10As people ______ more wealth ,they tend to spend a greater share of their incomes.

  A.adopt

  B.attach

  C.accomplish

  D.accumulate

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