21. My brother is handsome and _______, but sometimes he is not ______ me.
A. energy; patience with B. energetic; patient to
C. energy; patient with D. energetic; patient with
【解析】选D。句意“我哥哥很英俊，精力充沛，但是有时候他对我没有耐心。”be patient with sb. 对某人有耐心。
22. This is the only way we can imagine _______ the overuse of water in students’ bathrooms.
A. reducing B. to reduce C. reduced D. reduce
【解析】选B。此处考查不定式作后置定语。we can imagine 为定语从句，此处很容易让学生误认为imagine doing sth. 。句意为：这是我们能想出的惟一的能降低学生浴室内过度使用水的方法。
