单项选择题

Floods have undermined the foundation of the ancient bridge.

A. weakened
B. reached
C. spoiled
D. covered
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单项选择题
The driver finally decided to take the blame for the accident.
A. action
B. responsibility
C. charge
D. crime
单项选择题
Lower taxes would spur investment and help economic growth.
A. encourage
B. require
C. attract
D. spend
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