单项选择题

A．To restore the normal production of the oil wells.
B．To estimate the losses caused by the fires.
C．To remove the oil left in the desert.
D．To use the oil left in the oil lakes.
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单项选择题
A．By bike.B．By car.C．By bus.D．On foot.
A．By bike.
B．By car.
C．By bus.
D．On foot.
单项选择题
A．Courses for doctors.B．Courses for businessmen.C．Courses for reporters.D．Courses for lawyers.
A．Courses for doctors.
B．Courses for businessmen.
C．Courses for reporters.
D．Courses for lawyers.
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