21.It was as a physician that he represented himself, and ( )_ he was warmly received.

282.She was once a young country wife with chickens in the backyard and a view of ___________ mountains behind the apple orchard.

281.He was lured into a crime he would not ___________ have committed.

280.U.S.News __________ rankings of colleges since 1983. They are a very popular resource for students looking to apply to a university campus.

279.The Bent Pyramid outside Cario __________ ancient Egypt’s first attempt to build a smooth-sided pyramid.

278.You must fire __________ incompetent assistant of yours.

277.At that moment, with the crowd watching me, I was not afraid in the ordinary sense, as I _________ if I __________ alone.

276.Some martian rock structures look strikingly like structures on Earth that are known _________ by microbes.

275.Timothy Ray Brown, the first man cured of HIV, initially opted against the stem cell transplantation that _________ history.

274.“It’s a shame that the city official should have gone back on his word.” The modal auxiliary SHOULD express __________.

273.“If I were you, I wouldn’t wait to propose to her.” The subjunctive mood in the sentence is used to __________.