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.