---Hello, may I speak to Millie? ---Sorry, she isn’t in. She _________ Nanjing.
---Is this computer game _______? ---No, it isn’t. It’s ________.
He likes playing ______ guitar but he doesn’t like playing _____ soccer.
---Is there______ “f” and _______ “u” in the word “four”? ---Yes, there is.
Our monitor always helps other students ____ their lessons and he never says any bad words _____ others.
Students in the USA spend time their homework than we do.