Measures have been taken to solve the problem, but it may be some time ____ the situation improves.
When _______ comes to advertisements, we must all use our intelligence.
________ he found the idea interesting, it was too difficult to be of practical use.
As they were walking around, they noticed a man _______ against a tree.
Do some warming up exercise before sports. Or you _______ hurt yourself.
Teenagers ________ their sense of hearing because they always wear earphones.