--Who’s Mr. White, Li Mei?--He is our English teacher. He’s ______ the USA.A. in B. at C. from
---How many _______ are there in the basket? --- _______ fourteen.
---Where are you from? ---I’m from_______, I’m _______.
—_______? —He’s friendly and helpful.
—Would you go to the museum with me this Sunday? —Sorry, _______. My aunt is coming to visit the family. We plan to have a welcome party then.
I saw him crossing the street. The sentence structure is _______.