Unit3 Tomorrow’s World單元學(xué)案
13、susan decided not to work on the program at home because she didn’t want her parents to know what she _________. a has done b had done c was doing d is doing 14、months ago we sailed ten thousand miles across this open sea, which _________ the pacific, and we met no storms. a was called b is called c had been called d has been called 15、________ in the queue for half an hour, tom suddenly realized that he had left his wallet at home. a to wait b have waited c having waited d to have waited 16、it is said that barbara’s sister fell off her bicycle on her way to school, _________ in the left leg. a seriously damaging b hurting badly c breaking seriously d badly hurt 17、oh, i’m not feeling well in the stomach. i _______ so much fried chicken just now. a shouldn’t eat b mustn’t have eaten c shouldn’t have eaten d mustn’t eat 18、it seems as if the sun ________ round the earth since it rises in the east and sets in the west. a circles b is circling c has been circling d were circling 19、they must have been enjoying themselves there, otherwise they _________ so long.a can’t have stayed b wouldn’t have stayedc needn’t have stayed d couldn’t stay