－George's mother was very much worried about his studies at school.

－Yes. His failures ________ his mother many sleepless nights.

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Mrs Black is 45 this year, but she doesn't ________ her age at all.

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－Why are you half an hour late?

－We were ________ for an hour in the traffic jam.

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It looks as if they are going to ________ us 3000 dollars for the concert hall.

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His mother had thought it would be good for his character to ________ from home and earn some money on his own.

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He ________ some French while he was away on a business trip in Paris.

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The taxi driver often reminds passengers to ________ their belongings when they leave the car.

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－Smoking is bad for your health.

－Yes, I know. But I simply can't ________.

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－I hear that Mr Apple has many interests.

－Yes, but his interest ________ lies in collecting stamps.

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I can't decide for the moment. I need ________ more time to think it over.

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