单项选择题

Manufacturing is Canada's most important economic activity, （） 17 percent of the workforce.

A. to engage
B. engages
C. engaging
D. engaged

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单项选择题

Sheep are important tamed animals because they provide food and clothing; （）, they are used in making other products such as soap and glue.

A. moreover
B. therefore
C. however
D. otherwise

单项选择题

In today's society, people are ______ for different reasons, such as their achievement, their wealth, or even their appearance.

A. celebrated

B. congratulated
C. prized

D. encouraged

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