Accordingtoschoolbussafetyrules,whenaschoolbusstopsont...

问题详情：

 According to school bus safety rules, when a school bus stops on the road to _____or pick up students, other vehicles behind it must stop to wait.

A. drop off        B. take off       C. pay off       D. turn off

【回答】

A

知识点：动词

题型：选择题