It’s not good for people __________ waste water (污水) into the river.
— _______ have you lived in Wuxi? — Since I was born.
I bought _______ English-Chinese dictionary. _______ dictionary is very useful.
The elderly should _________ politely. Also, they must ___________ well.
My cousin has _______ Project Green Hope since two months ago.
This magazine ______ out _____ the morning of March 1st.