This was a useful exercise put on by well-informed, thoughtful people.
This is a useful exercise for the person reading it, too!
On several occasions, I found these exercises quite useful and fun at the same time.
A variety of useful and interesting exercises to follow every reading passage.
If you are in a relationship, asking your partner how he or she would respond to the suggestions listed above is a useful exercise.
Learn more about these fun and useful exercises that keep your memory in tip top shape.
In my opinion, the 1998 discharge was a fascinating and at the same time useful exercise.
I am sure we will not agree with every single detail in this report but that would be a useful exercise nevertheless.
It is a useful exercise to put - and answer - the obvious question: "What are we arguing about?"
And having to run for the bus gives me some useful exercise.