n.泄漏；免费样品；有奖竞猜

Mother tried to hide her feelings,but the tears in her eyes were a dead giveaway. 母亲努力掩饰自己的感情,但是她眼里的泪水完全泄露了她内心的秘密。

Some D-C motorists (are) driving happy today, thanks to a free gas giveaway. 多亏有免费汽油赠送，今天华盛顿的司机都很高兴。

The wonderful response to my pillow giveaway made me think even more about pillows. 大家对我提供的免费枕头样品的热烈反应使我更多地关注枕头这个话题。