A:We’d better not.
B:No, thank you.
C:Yes, please.
D:I’m afraid you can’t.
3.5×0.2=
1÷0.5=
4×0.25=
0.63÷0.7=
0.99÷0.01=
1.2×4=
2b﹣0.2b=
2.33×1.2=