单项选择题
（）at Harvard，with his first year there，he began again to write poetry for the first time in a dozen years.
A.Busy as he wasB.He was busyC.As being busyD.Being busy
单项选择题 His chief difficulty（）people ignorant of Jeans machinations.
单项选择题 （）he may be，he will be happy.
单项选择题 The students and graduates（）to raise money when the gym burned down.
