问题补充:
Autumn coming, the leaves have turned into brown color.
A. frequently
B. gradually
C. exactly
D. regularly
答案:
A. frequently
(答案→)B. gradually
C. exactly
D. regularly
解析:副词辨析。Frequently频繁地,经常地;gradually渐渐地;exactly恰好地;regularly定期地。句意:秋天来了,树叶渐渐的变成了褐色。故选B。