The poor lady asked all the _________ if they had seen her lost child, but she got no lucky reply.

The poor lady asked all the _________ if they had seen her lost child, but she got no lucky reply.

A.passers-by

B.passer-bys

C.pass-bys

D.passing-by

答案及解析： A

解析：

passer-by是“从旁边经过的过路人”，复数为passers-by。