Doyouknow        PM2.5,children? A.howshouldwedealwith...

问题详情：

 Do you know         PM 2.5, children?

 A. how should we deal with                B. how to do with

C. how to deal with                             D. what to deal with

【回答】

C

知识点：非谓语动词

题型：选择题