There was such a long line at the exhibition ________ we had to wait for about half an hour.选项: a、as b、 that c、 so d、 hence
问题描述：
There was such a long line at the exhibition ________ we had to wait for about half an hour.
选项:
a、as
b、 that
c、 so
d、 hence
答
C so
表示因果关系 因为排队队伍很长，所以我们要等半个小时
答
b
答
b、 that
答
c