His invention ________ of no use by the scientists of that time.

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A friend of ________ went to the railway station to see

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－Is this raincoat yours?

－No, mine ________ there behind the door.

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－Did you walk to school this morning?

－No, we went by bus ________.

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The gentleman ________ you told me yesterday proved to be a thief.

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The teacher came into the classroom, ________ by a group of students.

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He is the one of the boys who ________ good at playing football.

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How about the two of us ________ a walk down the garden?

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Bill said he'd been working in the office for two hours, ________ was true.

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________ to someone's health, we should raise our glasses without touching those of the others.

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