Question

请帮忙做几个选择题

1. I can remember all the telephone numbers after _____ them just once.
A. see B. saw C. seeing D. to see
2. ______ notes can help you learn English.
A. Take B. To take C. Taking D. Took
3. Then you'd better do something about it, _____?
A. didn't you b. Hadn't you C. don't you D. haven't you
我的选择是1. C---after是介词，后面跟ing形式，after doing sth；选A的话句子应为after I see ...
2. C---动名词taking notes短语作主语;
3. B---you'd better=you had better
提供的参考答案为ABD，感觉有误，但还是不太拿得准，不知道准确的答案，请大家帮忙详细解答一下，谢谢~~~

Answer 1

1，C after 是介词 后面跟动词的ing形式
2，A 后面是can 前面的动词用原型
3，B you'd better 是you had better ，反义疑问句用 hadn't you
百度有文档专门讲反义疑问句，推荐看一下。http://wenku.baidu.com/view/9de74c8a6529647d272852e8.html

Answer 2

你想的是对的

Answer 3

CAB