A-A+
When we walked (past) the theater there were
问题详情
When we walked (past) the theater, there were a lot of people (waited) (in) a long line outside the (box office).
A．past
B．waited
C．in
D．box office
参考答案
正确答案：B
解析：分词用法错误，应改为waiting。people是wait的逻辑主语，两者是主动关系，所以用现在分词。
