MUST : We ... wash our hands often. , We ... wear masks. , We ... keep the distance. , We ... have online lessons. , MUSTN'T: We ... travel. , We ... do shopping without a mask., We ... cough in public. , We ... touch our faces with dirty hands. ,

Covid-19 Rules (must/mustn't)

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?