On the one hand ,it has brought mobility to millions of people.
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Opened the way to somkeless zones in large towns and cities.
A. 对
B. 错
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