Mistakes don’t just happen; they occur for a reason. Find out the reason and then making the mistake becomes .
Mr Smith suggested the problem worth paying attention to ________ at the meeting.
As you know, there are a few formalities to be _____ before you enter a foreign country.
We are bound to solve the present severe problem, ________ we act intelligently and promptly.
— David, how is your new job?— ________ the salary, it’s not bad.
It is well known that too much ________ to the sun can promote the development of many skin cancers.