题目内容

【C3】______

A. a number of
B. the number of
C. the amount of
D. an amount of

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【C15】______

A. processed
B. produced
C. provided
D. proceeded

【C7】______

A. In
B. To
C. By
D. On

【C14】______

A. yet
B. already
C. too
D. at all

【C12】______

A. Since
B. That
C. Far
D. With