1

我不知道

wǒbùzhīdào

I don't know.

2

她

tā

she

3

什麼時候

shénmeshíhou

when?; at what time?

=4

會

huì

can; to have the skill; to know how to to be likely to; to be sure to to meet; to get together meeting; gathering (suffix) union; group; association (bound form) a moment (Taiwan pr. huǐ)

=4

會

kuài

(bound form) to reckon accounts

=4

會

kuò

only used in 會撮／会撮

=5

回來

huílai

to return; to come back

=5

回來

huílái

(to come or bring) back (used after a verb to indicate direction towards the speaker) back (used after a verb to indicate direction towards the speaker) to return; to come back; to be back