问题补充：
You must be living in your dream if you think he’ll his mind.
A. pollute
B. avoid
C. imagine
D. change
答案：
A. pollute
B. avoid
C. imagine
(答案→)D. change
解析：句意：你必须一直生活在你的梦想里，如果你认为他会改变主意。pollute污染，avoid避免，imagine想像，change改变。change one’s mind改变某人的主意，固定短语，故选D.
