It is amazing that the little boy can swim ________the river ________100 meters in width.
I fell asleep while working on this paper _______ the computer on.
My daughter, _________ all kinds of meat, would not like to eat any vegetable,which worries me a lot.
It was in the lab _____ was taken charge by Professor Wang ______ they did the experiment.
No one can avoid ______ by advertising; it is everywhere.
With all the audience ________, the speech began.