11.   But tests showed that it did not substantially lower those levels, and the company switched tactics and sought approval as a food additive.

12.   He rejected suggestions that the people bringing foreign prostitutes into Thailand had simply switched tactics or were paying police officers to look the other way.

13.   Kurland then switched tactics, only to end up in another corner.

14.   Last month, the guerrillas abruptly switched tactics when they began to issue expulsion orders.

15.   Officially, the U.S. government has no plans to switch tactics in Colombia.

16.   So he switched tactics.

17.   So Fed officials have switched tactics.

18.   The army decided it was time to switch tactics, officials said.

19.   The Democratic takeover of the Senate has forced the administration to switch tactics from legislation to executive order.