–I drove to Zhuhai for the air show last week.－Is that you had a few days off？A．whyB．whenC．whatD．whe

The reason why we have to grow trees is that they can supply fresh air for us.（英译中)

The primary task of the compressed air system is to deliver the starting air necessary for

— I drove to Shenzhen for the air show last week.— Is that _____ you had a few days off？

I drove to the railway station to ___ my mother yesterday.A、take awayB、pick upC、look for

The old couple moved to the countryside ______their health for the doctor said fresh air w

—May I open the window to let in some fresh air ？—___________A. Come on B. Take care C.