--- Mr. Green, I think physics is too difficult for me. ---Tom, work hard, _______ you’ll find it not as difficult.
– ______ a year do people in the USA celebrate Halloween?– Once a year. I would like to dress up _______ an old woman.
My classmates and I ______.
– _______ does it take you_______ to school?– About half an hour.
Let me show you _______ my school, my new friend!
―_____ Lily ________ the USA?―_______, but now she lives in China.