1

發生

fāshēng

to happen; to occur; to take place; to break out

=2

了

le

(completed action marker) (modal particle indicating change of state, situation now) (modal particle intensifying preceding clause)

=2

了

liǎo

to finish (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget") (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least to understand clearly (variant of 瞭 liǎo)

=2

了

liǎo

(of eyes) bright clear-sighted to understand clearly

=2

了

liào

unofficial variant of 瞭 liào

3

什麼

shénme

what? something; anything

=4

好事

hǎoshì

good action, deed, thing or work (also sarcastic, "a fine thing indeed") charity happy occasion Daoist or Buddhist ceremony for the souls of the dead

=4

好事

hàoshì

to be meddlesome

=5

嗎

má

(coll.) what?

=5

嗎

mǎ

used in 嗎啡 mǎfēi

=5

嗎

ma

(question particle for "yes-no" questions)