Fill in the blank

How to Live 500 Years
 
我
wǒ
那
nà
时候
shí hou
看见
kàn jiàn
一
yí
 
 
很
hěn
漂亮
piào liang
的
de
衣服
yī fu
back then I saw a very pretty piece of clothing.
Hint: (m. w.) measure word for events, issues, and some articles of clothing
Correct!