单项选择题
Just as too much harmony is tiresome in music （）
A. the life of too many benefits annoys us B. so, in life, too many benefits annoy us C. we are annoyed with lives also of too many benefits D. much benefits annoy us in life
单项选择题 Michael might have come to school in time for Professor Browning’s lecture （）
单项选择题 I had to get （） about the subject before I write the paper.
单项选择题 Economies, several courses of which I have taken thus far, （） to be difficult but useful for almost all students.
