Who's at duty today?I am哪里错了

Who's at duty today?I am哪里错了 找错：Who is at duty today?I am. Who is at duty today?哪儿错了/ Who ’s ( ) duty today? 填空：Who’s--------duty today I am ___ duty today 填介词； (1) Who's ( ) duty today? (2) I think Chinese food is d 英语翻译1.Today I am on duty,it's my turn to clean the classroom who is ( ) duty today? who's on duty today翻译成汉语 Who's on duty today.的中文意思是什么啊 选择适当的介词填空who's( )duty today?There's a bird ( )the tree.I go