补全对话。 根据对话内容， 在空格中填写一个句子， 使对话完整、正确。
A. Do you think I can pass the PE test?
B. 1______. You've been exercising for quite a long time.
A. Yes, but I'm still worrying about that.
B. 2______. You can succeed this time.
A. 3______. You know, besides exercising every day. I also eat on diet.
It's possible that I've lost some weight.
B. Yes, 4______. people are likely to lose weight when they exercise more and eat less.
A. All right. 5______. Bye-bye.
B. Bye-bye. Good luck.