第一个完成的人将会得到一个奖励。

There'll be a ___reward for whoever finishes first.

我告诉她，她可以选择一个玩具作为对她良好行为的奖励。

I told her she could choose a toy as a ___reward for her good behavior.

我们赢得了一个比赛，得到了一个惊喜奖励。

We won a contest with a surprise ___reward.