7、The same report also quoted officials from China's communicable disease centre as saying that using air purifiers and wearing masks were more effective in combating the smog.
4、The ancient Celts believed that wearing masks would ward offevil spirits.
2、Transit workers and supermarket employees began wearing masks.
1、Perhaps they were wearing masks?
3、Whitewashed and ruddled, they seem to be wearing masks.
6、Despite wearing masks and shouting hard, Lu Xun's personal goal of devoting himself to the Enlightenment was soon realized.
5、In this world, there are always people wearing masks to face everything, pretending a lot.