问题
选择题
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
答案
答案：C
这题考查不定式做主语的用法，句型是：It’s +adj.+for sb to do。这里用的是there be句型，所以选there to be。句意是：在非洲有一群音乐家被别人包围着，这群人也同样参加了表演这是相当普遍的。