题目

— I should have gone to the wonderful concert with you yesterday. — _____. If possible, I wish I would have another such chance. A. Yes, you should      B. Take it easy C. What a shame         D. Don’t worry 答案：C 解析: 表示遗憾，并希望下次有机会去。举反例说明下面命题是假命题： 一个角的补角是锐角或钝角．