You might wonder how this kind of animal ____ to live without eating for so many months.
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; fallenB. had not been; could have fallen C were not; could fall D. had not been; could fall
40. I could have offered you some help last weekend, but I ______ with my work at that time.