A few looked at him curiously when he suddenly stopped and burst out crying. A. passers-b

问题补充：

A few looked at him curiously when he suddenly stopped and burst out crying.

A. passers-by

B. passer-bys

C. passers-bys

D. passer-by

答案：

(答案→)A. passers-by

B. passer-bys

C. passers-bys

D. passer-by

解析：本题考查名词复数。passer-by的复数应在主要名词上加S，故为passers-by。句意：当他突然的停下来大哭起来，一些路人好奇的看着他。