It is fairly common in Africa for a group of musicians surrounded by others who

It is fairly common in Africa for _______ a group of musicians surrounded by others who also join in the performances.

A. there are　 B. there being　 C. there to be　 D. there be

试题答案

C

考查there be句型动词不定式的复合结构形式。此处it是形式主语，介词for后应用there to be结构，故选C。