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He spent the whole day in his room. He was in his room _______

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“Who is in class today?”

          “Everyone_____ Sam, who is sick”.

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Tito was the only foreigner_________ I saw at the convention.

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Statistics_____ a difficult course for people to understand.

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I’d __________ the operation unless it is absolutely necessary.

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Since your roommate is visiting her family this weekend, _______ you like to have dinner with us tonight.

_____ begin with a few facts.

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We were shocked to hear the news of you_______

Robots ___________  an important role in our life.

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Until you learn to relax more, you_____ your ability to speak English.

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Bill came to work at the University thirty years__________

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 You _____ throw litter on the streets.

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When my father was young, he _____ work in the garden for long hours.

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We are now wet. You______ the raincoats with you.

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I borrowed four books on gardening the last time I _____ to the library.

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The news_____ quite alarming.

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We avoid _______ our environment.

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“Why did they close the center of the city to automobiles?”

          “Because the number of contaminants in the air_____”.

Recently, it is important__________ about computers. There are a number of things to learn. 

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Would you like something_______?

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By the time Alfonso finally graduated from high school, he_____ seven different schools because his parents moved frequently.