I listened to Dr. Johnson’s lecture about biology, but I failed to get its key ____.
_______ in her graduation paper, Mary has no time to do a part-time job.
How long do you think ________the car factory launches a new model?
Tom was the first man _______ after the accident.
--An explosion at a coal mine of Panzhihua killed at least 43 workers and left another 3 missing.--Yes,_______ news came as _______ shock to us all.
Mo Yan is the first Chinese people to win the Nobel Prize for his great ______ in literature (文学).