He often quarrels ______ his sister ______his studies at school.

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Computers ______ an important part ______ our work.

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Because of carelessness, he ______ the bottle of ink and it broke into pieces.

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The teacher asked us to ______ the new words which we learned today by heart.

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How long did the journey ________ you?

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I ______ rather not tell him about the news.

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The price of the computer is so ________ that I can't buy it.

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________ his work in physics, Einstein spent much time working for human rights and progress.

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There is nothing ________ a letter in the box.

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Please say “hello” to your parents ________ me.

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