--- You are always full of _____. Can you tell me the secret?--- Taking plenty of exercise every day.

 This information allows businessmen to keep        of their list of goods by showing which items are being sold and how fast they are moving.

______ has an internal clock that regulates the beating of our hearts, and the ______ of our breathing. 

At discussion, Jack ____ an idea that they should bring down the price of the bicycles.

__________ of the students who took part in the military training is 450.