—Aretheseseatsavailable?—Sorry

—Are these seats available?
—Sorry, sir. The seats ________.

A．have reserved	B．are reserved
C．reserved	D．are reserving

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When I met him the other day，it was the first time we __________ each other since we were at school.

A．saw

B．had seen

C．were seeing

D．have seen

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By the time Jack returned home from England, his son __________ from college.

A．graduated

B．has graduated

C．had been graduating

D．had graduated

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—Thank God you're safe ！
—I stepped back Just __________ to avoid the racing car.

A．in time

B．in case

C．in need

D．in vain

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Dina,__________ for months to find a job as a waitress，finally took a position at a local advertising agency.

A．struggling

B．struggled

C．having struggled

D．to struggle

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A．Waiting

B．To wait

C．Having waited

D．To have waited

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