单项选择题

A．He’s taking a break from studying.
B．He has already finished studying,
C．He was assigned to watch a program by his professor.
D．He’s finding out some information for a friend.
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单项选择题
A．To prevent the lookers-on from getting near.B．To protect the injured men.C．To let the fire engines and ambulances pass.D．To cheek the leaking gas pipe.
A．To prevent the lookers-on from getting near.
B．To protect the injured men.
C．To let the fire engines and ambulances pass.
D．To cheek the leaking gas pipe.
单项选择题
A．Do extra work if necessary.B．Change the spark plugs only.C．Clean the spark plugs only.D．Charge her more than ￡ 10 if necessary.
A．Do extra work if necessary.
B．Change the spark plugs only.
C．Clean the spark plugs only.
D．Charge her more than ￡ 10 if necessary.
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