Really.....muchly.....overly
clear, definite, fixed, guaranteed, positive, undoubted, valid, supreme, safe
depends on the mood of the person if they are smiling. If they are planning something bad, smirk would be a good word. Also, grin would be another good word to use intead of smile.
When you go to some European countries you have to use a euro intead of a dollar.
Because the compounds have the desired properties, effects and reactions.
Most likely, but the flavor won't be the same.
Well no a Co2 cun justs uses compresed Co2 intead of a spring or a batery Co2 if fairly cheap and are easy to use
Alotmuchand more words
the the change in price of a commedity, consumer will buy other good intead
That is a very broad question, which I will not attempt to answer.
extremely
You could use excellent to describe very good :)
shakespeare used 31534 words and we use over 60, 000