4.Exercise is the ideal way to______(relief)tension after a hard day.
6.You can’t have a complete monopoly of the car,I need to use it_______(occasional).
7.As soon as she learns the office______(routinely)she will be an excellent assistant.
8.He’s devoted his whole life to the_____(protect)of the rare animals.
9.Darwin spent more than twenty years working on his theory of______(evlove).
10.We will have some vocational training before______(graduate).