1. (pronoun) this; these
2. (bound form) this; the (followed by a noun)
3. (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)

1. question
2. problem
3. issue
4. topic

classifier: 個

1. very; quite
2. (also, often used before an adjective without intensifying its meaning, i.e. as a meaningless syntactic element)

1. good
2. appropriate; proper
3. all right!
4. (before a verb) easy to
5. (before a verb) good to
6. (before an adjective for exclamatory effect) so
7. (verb complement indicating completion)
8. (of two people) close; on intimate terms
9. (after a personal pronoun) hello

1. to reply; to answer
2. reply; answer