根据中文意思完成句子。

1. 李平一回到家就开始做作业。

    Li Ping begins to do his homework ________ he comes back home.

2. 我们经常乘高铁或公共汽车去北京。

   We often go to Beijing ________ by sky train ________ by bus.

3. 郭明义在他的生活中总是尽力帮助别人。

   Guo Mingyi always helps others ________ in his life.

4. 不要害怕犯错误，因为没有人总是对的。

    ________ because nobody is right all the time.

5. “让子弹飞”非常有趣，我和我朋友都看过两遍了。

   "Let the bullet fly" is ________ it twice.