单项选择题

A．It was getting dark.
B．He was afraid of being blamed by his friend.
C．The birds might have flown away.
D．His friend would arrive any time.
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单项选择题
A．adviserB．computer programmerC．product designerD．schoolteacher
A．adviser
B．computer programmer
C．product designer
D．schoolteacher
单项选择题
A．The underground oil resources have not been affected.B．Most of the desert animals and plants have managed to survive.C．The oil lakes soon dried up and stooped evaporating.D．The underground water resources have not been affected.
A．The underground oil resources have not been affected.
B．Most of the desert animals and plants have managed to survive.
C．The oil lakes soon dried up and stooped evaporating.
D．The underground water resources have not been affected.
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