A:
B:
C:
D:
将 3a(x-y)-9b(y-x)分解因式,应提取的公因式是____
对农业生产来说,寒潮危害最大的是( )
A. milk B. bread C. juice D. cakes E. hungry
A: Mum, I'm ____!
B." Have some ____
A. Can I have some ____ please?
B." OK. Here you are.
A: I'd like some ____and ____
B: Here you are.
A: Thank you very much.