We have been cooking for the party for four hours We didn’t start cooking for the party46/50Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions We have been cooking for the party for four hours We didn’t start cooking for the party until four. We started cooking for the partyfour hours ago. We have four cooksfor the party. Cooking for the partywill be done in four hours.Giải thíchĐáp án B Kiến thức kiểm tra: tense transformation