1

我不知道

wǒbùzhīdào

I don't know.

2

他

tā

(third-person singular) (since the early 20th century, usu. male) he; him; his (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)

=3

從

Cóng

surname Cong

=3

從

cóng

from; through; via (bound form) to follow (bound form) to obey (bound form) to engage in (an activity) (used before a negative) ever (bound form) (Taiwan pr. zòng) retainer; attendant (bound form) (Taiwan pr. zòng) assistant; auxiliary; subordinate (bound form) (Taiwan pr. zòng) related by common paternal grandfather or earlier ancestor

4

哪裡

nǎlǐ

where? somewhere anywhere wherever nowhere (negative answer to question) humble expression denying compliment

5

來

lái

to come (used as a substitute for a more specific verb) hither (directional complement for motion toward the speaker, as in 回来 huílai) ever since (as in 自古以来 zìgǔyǐlái) for the past (amount of time) (prefix) the coming ...; the next ... (as in 来世 láishì) (between two verbs) in order to (after a round number) approximately (used after 得 dé to indicate possibility, as in 谈得来 tándelái, or after 不 bù to indicate impossibility, as in 吃不来 chībulái)