1.   A few honest policemen were willing to blow the whistle on the captain.

2.   A shrill whistle is blown angrily by a shivering soldier, a sentry at the tomb.

3.   A train blew its whistle and drowned his voice.

4.   Any moment now the final whistle will be blown.

5.   Anyone who tried to blow the whistle on the violence was intimidated or threatened.

6.   As demonstrators blew whistles and chanted on the streets, other AIDS activists got stuck into the science.

7.   As the ball went in, the referee blew his whistle for full time.

8.   Demonstrators blew whistles and screamed protest chants.

9.   He blew the whistle on his colleagues.

10.   He was shot because he knew too much and was about to blow the whistle.