Opened the way to somkeless zones in large towns and cities.
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The mother didn't know to blame who broke this cap.
A. 对
B. 错
This medicine can lessen the pain in on time.
A. 对
B. 错
Her eyes were red become she had been crying.
A. 对
B. 错
Car _is the main reason for the city's pollution.
A. exhaust
B. use
C. exhausting
D. using
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