Thetrafficrulesaysyoungchildrenundertheageoffourand

问题详情：

The traffic rule says young children under the age of four and __     _ less than 40 pounds must be in a child safety seat．

A．weighing          B．weighed         C．being weighed           D．to weigh

【回答】

A

知识点：非谓语动词

题型：选择题