问题
选择题
Autumn coming, the leaves have ________turned into brown color.
A．frequently
B．gradually
C．exactly
D．regularly
答案
答案：B
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。
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