A whole army of relations ( ) outside the hospital until the

A whole army of relations ( ) outside the hospital until the small hours of the monring.
A、squared up
B、speeded up
C、queued up
D、quicken
【正确答案】：C
【题目解析】：speed up 加速， quicken 加快，复活，queue up 排队，集合，句子含义是军队在医院意愿外面集合/排队等候。