单项选择题

Because the workers were new and inexperienced, the manager had to watch them and （）their work closely.

A. attend
B. demand
C. analyze
D. supervise

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单项选择题
Among 169 cases, the smokers （）85.79% , and the ratio between males and females is 3.7 to 1.

A. answer for
B. account for
C. take up
D. sum up
单项选择题
Joe puts too much （）on pills from the drugstore and does not listen to his doctor.

A. appliance
B. defiance
C. reliance
D. compliance
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