---Do you remember there _____ a river here? --- Of course, I often swam in it when I was young.
I have a ______ friend. He has lived in the _____ island for half a year to do some research.
-- The girls are talking about the art festival _______.--- Yes. They have so many interesting things to share.
--- Both the young and the old are getting crazy _______ WeChat(微信).--- I agree. Nowadays we can see many people spend their free time ______ it.
The students don’t know the broken computer.
I didn’t doubt _______ his advice was of more ______ to me.