A:hello ,where are you going?
B:well,we are not sure yet.
C:how about going shopping together?
B:that's a good idea!
D:oh,no.the shopping mall is too far.and the weather report calls for rain.
A:really?Well,this is going to make things a little more difficult.
C:don't worried.i can drive you to the mall .
B:Before we go shopping,we should make a list of the things we must buy.
A:i hear that it is it on sale today.
D:i want to buy some milk,how about you?
A:i am not sure.It depends on circumstances.
C:ah!i need to buy some cpffee,because i feel sleepy at class sometimes.
B:ok!let us go.