单项选择题

We are using up our natural resources too quickly and at the same time we are ______our environment with dangerous chemicals.

A．protecting
B．saving
C．polluting
D．fighting
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单项选择题
— Excuse mc, are you waiting for the bus — Yes, I am. But the bus is so late.______, how can I get to No.1 Middle School
A．In the way
B．On the way
C．Out of the way
D．By the way
单项选择题
I will go back to my hometown as soon as I ______my examinations.
A．will finish
B．finish
C．has finished
D．would finish
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