_____ I was on a train and a Chinese university lecturer told me a story about his sister and brother-in-law.[ ]

I can play basketball，but my sister ________．

I think we should give up the project.—What for You know I have spent a(n) _____ month on it. I won’t give up.

However,　　　　 happened later proved me wrong.

_______a lot _______ fun.