No one knows the age of the old man wandering in the street all day, but judging from his appearance, he is in his sixties.
He has done so many things, so he certainly deserves _______ to prison.
Our goal is to build a harmonious society ______ all people are well educated, workers well paid, patients well treated, elders well tended, and families well accommodated.
______ you have known everything about it, it is unnecessary for me to talk about it again.
My parents want me to take ______ maths lessons at the weekend, but I want to relax myself.
The pictures made me think of the days _____ we spent in Beijing.