Whose badminton racket is this? It looks nice. How much is it _______? —Sorry, I don’t know.

Wow! You look different! You wear glasses.— Yes, I did. But now I am wearing contact lenses(隐形眼镜).

I don’t know the man _______ is looking after the old woman.

Lucy, what about going camping if it_____ tomorrow? — Sounds great! [ ]

My parents have promised to come to see me before Ifor Africa.