Nobody noticed the thief slip into the house because the lights happened to ________.

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She ________ his number in the phone book to make sure that she had got it right.

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I love to go to the seaside in summer. It ________ good to lie in the sun or swim in the cool sea.

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It is wise to have some money ________ for old age.

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－What did you think of her speech?

－She ________ for one hour but didn't ________ much.

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You're ________ your time trying to persuade him; he'll never join us.

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I can hardly hear the radio. Would you please ________?

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All the leading newspapers ________ the trade talks between China and the United States.

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They've done quite well and should be encouraged to ________.

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I've listened to Dr Alex's lecture about his latest discovery but I still haven't a good idea of its key ________.

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