第21题: [单项选择]Alec's keen eyes will not overlook ______ the letter in the wrong place, yet he purposely keep silent for politeness. A. you placing B. you to place B. your to place C. you have placed 参考答案:A 答案解析:overlook为及物动词，意思是：“忽略”，它后面一般接名词或动名词，而不接不定式，因此，B，C和D都可以排除。A选项的动名词带有自己的逻辑主语you，也可以用your来代替you。
第31题:[单选题] Let's go to the library this afternoon. — ______. A. Yes, that's right. B. No. I can't. C. What about you? D. That's a good idea. 参考答案:D
第32题: [填空题]He is determined to contest the next election even though he knows he may__________(冒落选的危险). 参考答案:run the risk of losing the election 答案解析:考查点：①短语“冒…危险”的表达方式是run the risk of；②“落选”，用lose an election。
