那位骑兵骑着马在训练场上熟练地跨越障碍。

The ___trooper skillfully guided his horse over the obstacles on the training field.

州警在高速公路上设置了检查站。

The state ___trooper set up a checkpoint on the highway.

尽管发烧了，他仍然是个坚强的战士，坚持完成了比赛。

Even with a fever, he was a real ___trooper and finished the race.