We will have 7 days ______during National Day.
—Will you get there by ________bike? —No, I will take ________bus.
The young has over twenty .
I used to swim ____ the Yellow River when I was young.
--You look so beautiful with such a nice hat! -----_________.
--I need something for cutting the big birthday cake.--Oh, you want a knife? OK.I’ll get ____ for you.