重点讲解：
1. run out of 用完；耗尽；
例句：We have run out of head notepaper.
我们已用完了有抬头的信纸D%B6Q_^v8w[_W1s8_%。
2. clean up 打扫；清扫；把…弄干净；
例句：She is cleaning up the kitchen now.
她现在正在打扫厨房3i8Ua.VQps。
3. find out （尤指特意通过努力）发现，找出，查明；
例句：Don't just accept his say-so: find out for yourself.
别听他信口开河，你得自己去弄清楚2uPM]%@B9FZ。
4. make sure 一定要；设法保证；
例句：You must make sure of the time and place.
你必须把时间和地点弄清楚_PugHv[dQTB)LC)WV^。
5. as well 也；还；
例句：I write my own songs and I play the guitar as well.
我唱自己谱曲的歌，也弹吉他iPB2rF-kTq=3ymgURlk。