He handed in the essay two days later than his classmates,but it was still _____the time limit set by the teacher.
45. The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
44. Please tell me ______ you would like to have your coffee --- black or white?
43. ______ he was absent, I was expected to take his place greatly surprised me, for I didn’t have much experience.
42. You’d better start it right away ______ you forget it.
41. If it ______ for the fence, he ______ into the river.A. were not; fallen B. had not been; could have fallen C were not; could fall D. had not been; could fall