单项选择题
— Did you come to the museum by bike yesterday
—No. Two metres of snow fell during the night. As a result, several main roads ______.
A．were blocked
B．had been blocked
C．were being blocked
D．have been blocked
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单项选择题
—I wish Bill would drive us to the train station. —He has ______ to take us all.
A．too small a car
B．very small a car
C．a too small car
D．such small a car
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单项选择题
— The light in the office is still on. —Oh, I forgot ______.
A．turning it off
B．turn it off
C．to turn it off
D．having turned it off
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