With so many people in English every day it will become more and more important to have

问题补充：

With so many people in English every day, it will become more and more important to have English.

A. communicated, good knowledge of

B. communicating, a good knowledge of

C. communicating good knowledge

D. to communicate, a good knowledge at

答案：

A. communicated, good knowledge of

(答案→)B. communicating, a good knowledge of

C. communicating good knowledge

D. to communicate, a good knowledge at

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