商场打折促销时，张老师买了一件衣服和一条裤子，共用了544元，其中衣服按标价打七折，裤子按标价打八折，衣服的标价为400元，则裤子的标价是多少元？

完成句子。

1. 她患癌症两年了。

    She has been ______ ______ cancer for two years.

2. 她很有创造力，她想出了很多解决这个问题的办法。

    She was very creative. She came up with many ways ______ ______ ______ ______.

3. 亚历山大从事写作不是为了好玩。事实上，写作是他的谋生之道。

    Alexander doesn't just write for fun. ______ ______, writing is his bread and butter.