What you are saying is not ____ to the question under discussion.Please think twice before you make any suggestions.
We all know that a bright future will ______those who always look ahead instead of looking back.
We ________the difficulty together, but why didn’t you tell me?
He gave the old couple a lot of money and didn’t expect to receive anything ______for them.
The math problem seems very easy, but in fact it is very difficult_______.
-----What did you think of Mount Tai? ------Wonderful. It’s worth ______once again.