---–How do you deal with the disagreement between the company and the customers? -----The key ________ the problem is to meet the demand ________ by the customers.
If you _____ stop smoking , you can only expect to have a bad cough .
There must be _____ book which could help .
Sarah hopes to become a friend of _____ shares her interests.
The young man spent as much time as he _____ over his lessons.
--- Who should I send this message to ? --- The mayor is the one ___ ?