2b 部分答案
1. Ben Smith (wrote the letter to Miss Li). Because he wanted to thank her (for giving money to Animal Helpers and tell her how Animal Helpers helped him).
2. She gave some money to Animal Helpers.
（答案仅供参考）
2c 部分答案
1. group(n.) A group of students are going to Beijing.
2. disabled (adj.) We should help the disabled children
3. difference (n.) There are some differences between my brother and me.
4. imagine (v.) Can you imagine what's in it?
5. difficulties(n.) Are you having any difficuities?
6. normal (adj.) It's normal to feel nervous before an exam.
7. training (n.) They haven't finished training.
8. kindness (n.) Thank you for your kindness.
（答案仅供参考）
2d 部分答案
苏科版八年级下册数学书答案
北师大版八年级下册数学书答案
八年级下册物理书答案北师大版
译林牛津版八年级下册英语课本答案
苏教版八年级下册语文课本答案
人教版八年级下册英语课本答案
北师大版八年级下册生物课本答案
北师大版八年级下册历史课本答案
浙教版八年级下册科学课本答案
人教版八年级下册生物课本答案
教科版八年级下册物理作业本答案江西省
浙教版八年级上册数学书答案
人教版八年级上册数学书答案
浙教版八年级上册数学作业本答案
八年级下册数学课时练答案人教版
八年级下册数学南方新课堂答案人教版
八年级下册语文课时练答案人教版
八年级下册英语同步解析与测评答案人教版
八年级上册语文配套练习册答案人教版
八年级上册生物学法大视野答案苏教版