The policeman ____ the children to cross the street when the traffic lights turned green

问题描述:

The policeman ____ the children to cross the street when the traffic lights turned green
The policeman ____the children to cross the street when the traffic lights turned green.
A .agreed
B .signed
C.made
D.let

B.signed 打手势
警察用手示意孩子们过马路,当交通灯变绿了.