The astronauts started their journeys in rockets ________ forward by jets of hot gas.

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Mobile phones have become a major instrument of communication, _________ us to make calls as well as to send text messages.

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H5N1 bird flu can result in death unless left ________ in time when a girl in Hunan, the first human case dying from bird flu after developing high fever.

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This is an early temple, ________ from the ninth century, which was rebuilt 10 years ago.

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________ many times, none of the boys dared swim in that river.

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________ that some guests were coming, they got the room ready.

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It was _________ to see all the students _________ silently in the classroom.

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________ in such a hurry, his composition has many mistakes.

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_________ his exercise book, he was scolded by the teacher.

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It seemed _________ everybody knew what had happened to Ms Wu.

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