选择:a large number of people _ standing there thenA.are B.is C.were D.was
问题描述：
选择:a large number of people _ standing there then
A.are B.is C.were D.was
答
C a number of 大量的，许多，谓语动词用复数
then 过去时
答
were，我猜的
答
C
people是可数名词,加上a large number of,所以排除B和D,句末有then,表示那时,已发生,故选C