It is ________ difficult for us to do ________ much work. We need more hands.

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The teacher told him to speak louder ________ by everybody.

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A11 these gifts must be mailed immediately ________ in time for Christmas.

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The flu is believed ________ by viruses that like to reproduce in the cells inside the human nose and throat.

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He speaks English well indeed, but of course not ________ a native speaker.

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The air-conditioners make the rooms comfortable ________.

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-- John, how about going for a picnic?

-- I'd love to, but I can't afford the time. I have to change my plan again which ________ my boss.

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Listen to the two girls by the window. What language ________?

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Missing the last bus means ________ home.

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All the employees except the manager ________ to work online at home.

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