People in China often dress up ________ their best clothes on New Year's day.
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It is set by the lunar calendar ________ the fifteenth day ________ the eighth month.
There is no school ________ during the festival.
I saw a cat ________ the tree when I was walking in the street.
Did you find ________ in our class?
What ________ your parents ________ at nine last night?
It ________ hard at this time yesterday.
Li Ping was watching TV ________ there was a loud knock on the door.
Mr. Li is out. But he ________ here ten minutes ago.
Our teachers are getting on well ________ us. We all like them.