Helen was much kinder to her youngest child than she was to the others, ________ of course, made the others unhappy.

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E-mail, as well as telephones, ________ an important part in daily communication.

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I was really anxious about you. You ________ home without a word.

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Do you know the singer and dancer who ________ at the gate?

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－What's the matter, Jim? You look sad.

－Oh, nothing much. In fact, I ________ of my friends.

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He tried to run away from the jail, but is ________ impossible.

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She told me that she ________ to a doctor for two years.

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Yesterday evening I ________ you with Peter but you were not at home.

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Here is your invitation to the party. Are you going to ________ it?

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I ________ hard all day, so I'm very tired now.

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