单项选择题
除非你们减价5％，否则我们无法接受报盘。
单项选择题 ______a wonderful trip he had when he traveled in China!
单项选择题 Mary found______extremely hard to pass the driving test after the enforcement of the new traffic regulations.
单项选择题 By the end of next year, Rose______ as a manager of the company for five years.
