1. ____________________ (你说的我大部分同意),but I can not go all the way with you.
　　2. They knew her very well. ___________________________ (他们看着她长大).
　　3. If tap water was as dangerous as some people think, ____________________________ (那我们中更多人将得病).
　　4. _______________________(考虑到所有问题)，the planned trip will have to be called off.
　　5. The professor could hardly find sufficient grounds on which ______________________ (来支撑他的观点).
　　

　　答案：
　　1.Much of what you say I agree with (你说的我大部分同意),but I can not go all the way with you.
　　(本题考察疑问代词引导名词性从句的用法，句中疑问代词是what)
　　2. They knew her very well. They had seen her grow up from childhood (他们看着她长大).
　　(本题考察see sb do sth和see sb doing sth 的句型，原句说，他们看着她长大，强调的是成长的过程，而非正在成长的动作，若用doing则表示动词的连续性、进行性)

　　3. If tap water were as dangerous as some people think, a lot more of us would be getting sick (那我们中更多人将得病).
　　(本题考察比较级修饰词的用法，a lot 修饰比较级时应前置)

　　4. All things considered (考虑到所有问题),the planned trip will have to be called off.
　　(本题考察分词的独立结构，consider为过去分词，构成独立结构)
　　5. to base his arguments The professor could hardly find sufficient grounds on which to base his arguments（来支撑他的观点）.
　　(本题测试定语从句的缩略形式，根据句意，介词on置于关系代词之前，应构成"to base his argument on the grounds”的合理意义，答案省译了on the grounds)