America is a ________ country.A.develop B.development C.developing D,developed
There ________ a book on the floor . A. am B. is C. are
——Could you tell me? ——Glad to help.
——________ late for school again, Tom! ——Sorry, I promise I _________.
Anyone _______ information should contact the police ________ 55554012.
Some Math problems in this book aredifficult for the studentswork out.