1.   By careful timing they gave good renderings of a number of popular tunes.

2.   Careful timing and choice of chemical can greatly enhance the effectiveness of a natural enemy.

3.   Careful timing by the cuckoo is important in another respect.

4.   He explains how bosses need to use careful timing and just the right words to correct employees without making them feel hurt or bitter.

5.   His words had both context and careful timing, and the world needs more of them, not less.

6.   If the test involves careful timing, use a stopwatch or clock with a second hand.