问题 选择题
It is a pity that none of the ______ stopped ______ the poor man lying there, begging.

A. passer-bys; to help 
B. passers-by; helping 
C. passer-bys; helping 
D. passers-by; to help


答案

答案:D

单项选择题 A3/A4型题
单项选择题 A1/A2型题