Most people who enjoy travelling believe that travel ______ not only our bodies but also our minds.
If we work with a strong will, we can ______ any difficulty, however great it is.
Some smoking and alcoholic drinks are a (n) ______ taste and are not inborn.
Whatever he explained, he couldn't ______ the policeman that he was innocent.
It ______ ,for there is no one that can be relied on.
The final examination is coming up soon. It's time for us to ______ our studies.