第2题: [单项选择]If the letter (to be mailed) (was placed) on the writing table an hour ago, it (is) certain (being) there now. A. to be mailed B. was placed C. is D. being 参考答案:D 答案解析:being改为to be。it is certain后应该接动词不定式。如:She is certain to come.
第23题: [填空题]At least he overstated _________ (健康饮食对孩子的重要性). 参考答案:the importance of healthy diet for children 答案解析:翻译本句前要先确定句子的主干,本句的句子结构简单,“夸大(overstate)”的宾语是“重要性(importance)”,“健康饮食对孩子的”要译成定语,放在“重要性”之后。