题目内容：

it's cold.let's make a fire to keep the room warm.这句中的to keep

优质解答

不是去理解to keep,这里有两个词组
make sth to 用...使..怎么样
keep warm 固定搭配 保暖
make a fire to keep the room warm 生火来使房间变得暖和（应该是在房间的壁炉里烧）