17. Besides our group we need 20 extra workers to get the work finished in time.A. around

问题补充：

17. Besides our group ,we need 20 extra workers to get the work finished in time.

A. around

B. about

C. or so

D. some

答案：

A. around

B. about

(答案→)C. or so

D. some

解析：可联系答.案.网客服索取。