--Who’s Mr. White, Li Mei?--He is our English teacher. He’s ______ the USA.A. in B. at C. from
Jack said,“I take _______ both my father and my mother.”
Old Henry thought for a while, and then he came up _______ a wonderful idea.
If you’re _______ trouble, you can ask the police _______ help.
---Would you have another cup of tea? ---________.
________the help of the police, the old woman found her way to her son’s.