________, the most important challenge ahead of us is to find a way to protect the water on our planet.

试卷相关题目

• 1Everyone in the town knew him so we had ________ his house.

  A.no difficulty in finding

  B.some difficulty in finding

  C.some difficulty to find

  D.no difficulty to find

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• 2We had a good many anxious moments, but everything ________ all right in the end.

  A.turned down

  B.turned on

  C.turned out

  D.turned to

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• 3I wish ________ .

  A.you to be success

  B.your succeed

  C.you success

  D.you are a success

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• 4Johnson is a New Yorker; ________ is, he lives in New York.

  A.this

  B.that

  C.he

  D.it

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• 5I was thinking about playing football after school when my teacher called ________ me to answer a question.

  A.on

  B.at

  C.up

  D.in

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• 6Seeing the drowning girl in the river, the soldiers jumped into it to save her _____ being drowned.

  A.at his own risk

  B.took the risk of

  C.faced the risk of

  D.at the risk of

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• 7Try ________ at the back door if nobody hears you at the front door.

  A.to knock

  B.to be knocking

  C.knocking

  D.your best to knock

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• 8I shall come along ________.

  A.as often as possible

  B.as possible as I can

  C.if will be probable

  D.if as possible as often

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• 9My interest in maths ________ the time I met good maths teacher in junor high school.

  A.dates from

  B.keeps from

  C.dates back

  D.keeps back

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• 10Many people love to ________ their possessions before others.

  A.give off

  B.turn off

  C.show off

  D.take off

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