The sun is_____bigger than the earth. 

—Tommy, _________ do you play the piano?—When my mom is at home, I have to every day, but she’s away this week!

I’ve ____ met her before, so I don’t know her.

—I saw you come to school by bus this morning. —Oh, I _________ come to school by bus, but it is raining today.

--- ______ do you play football?　 --- Once a week.