单项选择题
Unfortunately, his father（）in the traffic accident yesterday.
A.dead B.was killed C.killed D.was dead
单项选择题 Uncle Sam sent him a（）bicycle as a birthday present.
单项选择题 Unbelievable! I have failed the driving test again!（）This is not the end of the world.
单项选择题 Two days is not enough for him to finish the work．He needs（）day.
