I can’t leave the office now. A lot of work ________ to be done.
The taxi driver was _______$50 for ignoring the red light .
Taking _______exercises regularly will do good to our health .
It is my ______to check that all doors and windows are locked after everybody leaves .
We all know that the Great Britain will ______the Olympic Games in 2012.
We drew this conclusion on the _______of research and experments .