—______ a week do you use your computer?—Twice.
Our teacher often tell us ____ in the river. It’s dangerous.
---____ interesting the story is! ---Yes, I have read it twice.
I’m good at playing___ football, but Jenny is good at playing___ guitar(吉他).
I have _________ homework to do and I’m _______ tired now.
—She didn’t come to school yesterday, did she? —____, though she was not feeling very well.