--Who’s Mr. White, Li Mei?--He is our English teacher. He’s ______ the USA.A. in B. at C. from
--- Is the shop______ or______ now? --- Sorry, I don’t know.
Do you know the man_______ glasses?
Dad, my trousers are old. I want to buy a new ________.
Tom needs some help ________ his homework. Can you help ________?
It’s important __________.