27.If your car________any attention during the first 12 months, take it to an authorised dealer.

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 __________.

272.“I wondered if I could have a word with you” The past tense in the sentence refers to a _________.

271.Ms Ennab is one of the first palestinian _________ with seven years racing experience.

270.She followed the receptionist down a luxurious corridor to a closed door ________ the women gave a quick knock before opening it.

269.________ combination of techniques authors use, all stories—from the briefest anecdotes to the longest novels—have a plot.

268.The sentence “I wish I had been more careful in spending money” expresses the speaker’s _________.

267.________ your advice, I would have made the wrong decision.