You should have good knowledge of English if you want to find a job here. Because Englis

You should have good knowledge of English if you want to find a job here. Because English is the working language in most international trade centers.
A. 不填；the
B. 不填；不填
C. a; 不填
D. a; the

A. 不填；theB. 不填；不填(答案→)C. a; 不填D. a; the解析：考查冠词用法。固定词组have s good knowledge of…掌握；第二空后的centers是复数形式，前面不要冠词，故C正确。句意：如果你想在这里找到工作，你应该掌握英语。因为在大部分国际会议上英语是工作语言。故C正确。

感谢回答，我学习了