Question

Dear students, please read every sentence carefully. The more _____ you are, the______ mistakes you'll make.

A. carefully; fewer   B. careful; less    C. careful; fewer

Answer

C

【解析】考查形容词比较等级的用法。前半句有系动词are，可知缺少形容词，故排除选项A；mistakes为可数名词，用fewer来修饰。故选C。