若Z=a-4+4-a,分解因式:x3y2﹣ax=____ .
A.What about my toy bear?
B.Is it on your bed?
C.No, it isn't.
Alice:Mum,where is my car? Is it in the toy box?
Mum:____ It's in the desk.
Alice:Oh,thanks.____
Mum:____
Alice:Oh,yes,it is.