单项选择题

—Has Torn finished his homework
—I have no idea; he()it this morning.

A. was doing
B. had been doing
C. had done
D. did

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单项选择题
()as the best student, John was given a medal.

A. Regarded
B. Regarding
C. To regard
D. Being regarded
单项选择题
We agreed to his suggestion that a bridge () across the river.

A. be built    
B. was built  
C. should build 
D. would be built
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