单项选择题
A. to write carefully B. to do as teachers say C. to use dictionaries frequently D. to avoid using words one is not sure of
A. With her arms folded. B. With her seat belt undone. C. Holding tight to her seat belt. D. Holding on to part of the seat.
A. Hold the line B. flight number C. ask a question D. To New York E. May I have your name F. reconfirm my seat G. please check in H. On May 11th