________they were singing, the teacher came in

试卷相关题目

• 1The ability to store knowledge makes computers different from every other machine _____ invented.

  A.ever

  B.thus

  C.yet

  D.as

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• 2Parts of the cave have been badly affected by rain and ______ to the air.

  A.express

  B.excavate

  C.exposure

  D.expand

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• 3Some festivals are held to honour the dead or to satisfy the ancestors, who __________ return either to help or to do harm.

  A.must

  B.should

  C.might

  D.shall

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• 4Not until _____ ten _____ to school.

  A.was he; he went

  B.was he; did he go

  C.he was; he went

  D.he was; did he go

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• 5She was pleased with the way ________ he had accepted her praise.

  A.which

  B.in which

  C.in that

  D.when

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