A:①②
B:②③
C:①③
D:③④
——__________Internet business traditional business in the past few years? ——Not really.
66-38=____ 200+65=____
3-1.4=____ 4.8+3.2=____
补全对话。
A: ____?
B: I'd like some fish and rice.
A: OK. Hold on, please.
B: ____?
A: Fifty yuan, please.
B: That's OK. ____.