Bicycling is good exercise; ____, it does not pollute the air.
_________worries me the way he keeps changing his mind.
______wants to stay in a hotel has to pay their own way.
I like this jacket better than that one, but it costs almost three times______.
To know more about the British Museum, you can use the Internet or go to the library, or _______.
The manager believes prices will not rise by more than _____ four percent.