1.   And since acquisition depends on communication, your deliberate delivery will impede your progress in learning the language as well.

2.   He had no torch, but darkness did not impede his progress.

3.   If Nature herself sought to impede her progress, then resistance was mere pride and folly.

4.   Progress has been impeded by a number of economic factors.

5.   Storms at sea impeded our progress.

6.   Fallen rock is impeding the progress of rescue workers.

7.   And heaven help the hapless jogger who accidentally impedes her progress.

8.   And of course, politics are impeding progress on this technological problem.

9.   And the stigma of being a sexually transmitted disease that started among homosexuals continues to impede progress in fighting it, Fisher said.

10.   And they accused him of impeding the progress of investigations on issues ranging from his relationship with a former White House intern to exports of satellite technology to China.