4.A:Hi,Lin Fang.You look unhappy,what's wrong?
B:(21)B
A:I don't think that's a good idea.We aren't children any longer.
B:That's right.(22)D
A:Really?My father allows me to make friends with all of my classmates,but my
mother doesn't agree with him.
B:(23)C My mother doesn't let me play computer games when I am free,either.
A:I think she is right.We mustn't spend too much time playing computer games.(24)G
He thinks a girl should have long hair.
B:That's funny.My father always tells me not to ride my bike to school.He thinks it's too
dangerous.
A:I don't think it is,but you should ride slowly.It's too dangerous to ride fast.
B:You are right.(25 )A
A:I think we need to talk to them and make them understand us.
B:You are right.
