—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
125×32=____
如下图所示,制作洋葱鳞片叶内表皮细胞临时装片的正确操作顺序是( )