KNOWING SEVERAL ……. HELPFUL IF YOU WORK FOR AN INTERNATIONAL CORP...

989. - 1000 CAU TRAC NGHIEM TIENG ANH ON THI THPT QUOC GIA CO DAP AN
1000 CAU TRAC NGHIEM TIENG ANH ON THI THPT QUOC GIA CO DAP AN

989. Knowing several ……. helpful if you work for an international corporation.

A. language are

B. language is

C. languages is

D. languages are