22.If we know more about _______causes the problem, we may take measures before it is _______late.
There are some health problems that, when _____ in time, can become bigger ones later on.
Hardly ________________ she heard the strange scream coming from behind a tree.
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.
______ disturbed, I spent three hours locked in my room, preparing for the next day’s job interview.
—I think it is ______ great pleasure to work with you. —Me too. What’s more, what we’re doing will make ____ big difference to the lives of poor families.