It is colder than yesterday; put on more clothes or you will catch a cold. A. frequentlyB

问题补充：

It is colder than yesterday; put on more clothes or you will catch a cold.

A. frequently

B. fortunately

C. slightly

D. generally

答案：

A. frequently

B. fortunately

(答案→)C. slightly

D. generally

解析：考查副词：A. frequently频繁地B. fortunately幸运地C. slightly轻微地 D. generally一般地，句意：今天比昨天稍微冷一些，多穿些衣服，否则你会冷的。选C。