—Sorry, Miss Liu. I forgot __________ my homework to school.
— __________ so careless, Sandy.
A：to bring; Don't be
B：to bring; Not be
C：bringing; Don't be
D：bringing; Not be
下列哪个结构受到损伤或病变，会同时影响人们的呼吸和食物的进入（ ）
