A. surgical mask B. cold-weather mask C. gas mask D. anti-pollution mask
A.the anti-pollution masks B. the gas masks C. the surgical masks D. the cold-weather masks
A. the surgical mask B. the cold-weather mask C. the gas mask D. the anti-pollution mask
A. the gas mask B. the surgical mask C. the silk mask D. the gold mask
A. Washing your hands frequently B. Stay indoor as you can C. Wearing masks if you need to go out D. Eat a lot.
微信支付 
支付宝支付