?(11)We couldn’t catch up with the others because they _____too long before us. ?
?d ? ? ? starting ? started ? ? started ?

?(12)She felt anxious about her son as she ________for quite a long time. ?
? #39;t heard him ? ? ? ? ? B. hadn’t heard him ?
? n‘t heard from him ? ? ? ?D. hadn’t heard from him ?
?
(13)By the time the speaker entered the hall, all the listeners_______. ?
? A. had seated ? ?B. were seated ? C. seated ? ? ? D. were seating ?
?
?(14)By the end of next July this building__________. ?
? A. will be finished ? ? ? ? ? B. will have finished ?
? C. will have been finished ? ? ? D. had been finished ?
?
?(15)By the time the war ____, most of the people had left. ?
? began ? ? ? ? ? ? ? B. was broken out ?
? out ? ? ? ? ? ? ? D. had been broken out ?
?
(16)If she ______harder, she would have succeeded. ?
? A. had worked ? ?B. have worked ? C. should work ? ?D. worked ?
?
(17)I wish ______I you yesterday. ?
? A. seen ? ? ? B. did see ? ? C. had seen ? ? ?D. were to see ?
?
(18)He is talking so much about America as if he _______ there. ?
? A. had been ? ? been ? ? C. was ? ? ? ?D. been
?
(19)That dinner was the most expensive meal we___. ?
? A. would have ? ?B. have had ? ? C. had never had ? D. had ever had ?
?
(20)When Jack arrived he learned Mary ______for almost an hour. ?
? A. had gone ? ? B. had set of ? ?C. had left ? ? ?D. had been away?
?
?【答案解析】
??(11)—(15)D D B C C ? ?(16)—(20)A C A D D