I don’t know ______.
–How about __________ in the river with us?–Sorry, I can’t. My parents often tell me __________ that.
I was doing my homework while my parents __________ TV last night.
–Little boy, don’t play with the knife, __________ you’ll cut your hand. –Sorry, I won’t.
–Peter, __________ do you visit your grandparents? --Twice a month.
Don’t just believe the advertisement. That kind of camera is __________ it says.