1. I
2. me
3. my

1. letter
2. mail
3. to trust
4. to believe
5. to profess faith in
6. truthful
7. confidence
8. trust
9. at will
10. at random

classifier: 封

1. (possessive particle, literary equivalent of 的 de)
2. him
3. her
4. it

1. to speak; to talk; to say
2. to explain; to comment
3. to scold; to tell off
4. (bound form) theory; doctrine