Unless ________ to speak, you should remain silent at the conference.

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The purpose of new technologies is to make life easier, ________ it more difficult.

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The computer center, ________ last year, is very popular among the students in this school.

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He felt rather ________ that she should drive the car at such a ________ speed.

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Alter school, what my son enjoys ________ football.

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________, so we had to stay at home.

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-- ________ you mind if I borrowed your new bike?

-- Yes, I'd like to lend you ________ but it.

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-- Was it ten ________ when you came home last night?

-- Yes, the clock was ________ the hour.

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There are altogether eleven books on the shelf, ________ five are mine.

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When first ________ to the market, these products enjoyed great success.

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