If no one ________ the telephone at home, ring me at work.

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He sent me an E-mail ________ to get further information.

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How beautifully she sings! I have never heard ________.

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I don't think you can speak English, ________?

[　　]

Michael ________ be a policeman, for he's much too short.

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The home improvements have taken what little there is ________ my spare time.

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Have a good rest, and you need to ________ your energy for the tennis match this afternoon.

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Some new oil fields ________ since 1980．

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A．were opened up

B．has opened up

C．have been opened up

D．had been opened up

We hope you ________ with the gift we sent you last night.

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Do you remember ________?

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