问题
选择题
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
答案
答案：C
考查名词词组：a good command of English 精通英语，a must一个必备的东西，句意是;如果你想成功的做国际贸易，精通英语是必备的。选C。