—Tom , Don’t talk. _______ what you are doing.—Sorry, Mr. Li.
Tom needs some help with _______ homework. Can you help ________?
Children shouldn’t watch TV.
People can play tricks __________ others __________ April 1st.
After school, we often play __________ football on __________ playground.
—Do you have a small mouth?—No, I don’t. I have a wide ____.