未知题型 The millions of calculations involved, had they been done by hand,__________ all practical value by the time they were finished.A) had lost B)would have lost C)would lose D)should have lost

未知题型 I don't mind ______ the decision as long ?

未知题型 This kind of glasses manufactured by experienced craftsmen ______ comfortably. A) is worn B) wears C) wearing D) are worn