______ private cars are bringing us convenience, they also cause more traffic accidents and pollution.

试卷相关题目

• 1________ you understand this rule, you'll have no further difficulty.

  A.Once

  B.Unless

  C.As

  D.Until

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• 2As we have planned, we'll go to Beijing to attend her sister's wedding party. We'll also visit our mother school _______we go there.

  A.unless

  B.when

  C.once

  D.even if

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• 3I had no sooner got back to the kitchen ________ the door-bell rang loud enough to wake the dead.

  A.when

  B.than

  C.as

  D.while

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• 4I criticized him, you know, not ________ I hate him but ________ I love him.

  A.because; because

  B.because; for

  C.for; because

  D.for; for

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• 5It took seven years __________ they finally got married.

  A.since

  B.after

  C.before

  D.when

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• 6— May I go and play football with Dick this afternoon, Dad? — No, you can't go out ________ your work is being done.

  A.before

  B.until

  C.as

  D.after

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• 7Liping works very hard at his lessons .He didn't get the first place in the exam ,_______.

  A.though

  B.yet

  C.however

  D.although

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• 8The queen will visit the town in May, _____she will open the new hospital.

  A.when

  B.then

  C.while

  D.but

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• 9Help others whenever you can ______ you will make the world a nicer place to live in.

  A.and

  B.or

  C.unless

  D.but

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• 10My parents live in a small village. They always keep candles in the house _______ there is a power cut.

  A.if

  B.unless

  C.in case

  D.so that

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