1.   Extra security was designed to prevent trouble inside the Opera House.

2.   Riot police are being deployed throughout the city to prevent any trouble.

3.   A dentist may decide to extract the tooth to prevent recurrent trouble.

4.   A simple precaution to prevent trouble is to stop use of the drug only slowly.

5.   But whether the classes really prevent trouble is open to question.

6.   Hershiser helped prevent potential trouble for himself in the third inning by making a fine play on a topped roller between the mound and third-base line.

7.   Snyder claims that Mrs. Powell struck first and that the officers were trying to prevent trouble rather than start it.

8.   Student groups that had organized events to help prevent trouble at Freaknik disagreed, noting that organized events might have focused energies and prevented some problems.

9.   The Bagram detention area is heavily guarded both to prevent trouble among the prisoners and to prevent any attempt by Islamic militants to break in and free their comrades.

10.   The double play ended the inning and prevented more trouble for Stottlemyre.