Ifyouwanttodointernationaltradesuccessfully,

問題詳情：

 If you want to do international trade successfully, ______ of English is _______.

A. good command; a must                     B. a good command; a need 

C. a good command; a must                   D. good command; must

【回答】

C

知識點：單詞

題型：選擇題