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 |
相关知识点
推荐套卷
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 |