(届云南省景洪市第一中学高三上学期期末考试英语试卷)It's said that ________ gains from house sales should pay the individual income tax.
Under the circumstances I usually think of the great effort and courage it _____ for the girl to come back and apologize.
Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
— Hi, Maria! I got the first place in the exam. — ______! Everyone knows you cheated and you just copied Tony’s.
The weather turned out to be fine yesterday. I_____ the trouble to carry my umbrella with me.
I was about to leave the office ______ an unexpected visitor came.A. while B. as C when D. before