When astronauts return to the earth's atmosphere, helicopters fly to________they would land, ready to collect them.

试卷相关题目

• 1After _______ had happened he could not continue to work there.

  A.which

  B.how

  C.what

  D.having

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• 2________ her faults, she's Arnold's mother. Don't be so rude to her.

  A.Whatever

  B.What

  C.Whichever

  D.Whenever

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• 3I like traveling by sea ________  it is not rough.

  A.unless

  B.in case

  C.as long as

  D.although

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• 4I'll keep his address _____ I need it.

  A.so that

  B.in order that

  C.in case

  D.when

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• 5The point is not who said the words, _____ they are true or not.

  A.but whether

  B.and whether

  C.but how

  D.and how

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• 6   The UN has warned that,_____ natural systems like forests and wetlands disappear , mankind is losing the services they provide such as protection from extreme weather.

  A.while

  B.once

  C.when

  D.as

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• 7The newly built café, the walls of_______ are painted light green, is really a peaceful place for us, specially after hard work.

  A.that

  B.it

  C.what

  D.which

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• 8. ____ I am concerned, we should be brave and we will reach the top of the hill at last ____ we try our best to climb the hill.

  A.So long as; as long as

  B.As far as; as longer as

  C.So long as; as far as

  D.As far as; as long as

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• 9She is getting better by degrees, but it will be some time _____ she is completely well.

  A.that

  B.since

  C.when

  D.before

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• 1040. —Shall Tom go and play football? —Not ________ he has finished his homework.

  A.when

  B.if

  C.unless

  D.once

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