Construction workers usually get ______ by the day.
No one believes the small dark lab is ___ home to so many great inventions at___ first sight.
Fleming discovered penicillin almost by______.
I really don’t understand how he can ______away with cheating.
This year, many Chinese people turned to flowers instead of paper money to have a green Tomb-sweeping Day ______ memory of their lost relatives.
Danby left a message with the professor_________he would call again in the afternoon.