题目内容：

词汇，用方框中所给单词的适当形式填空．

you  choose  sun    photo    explain

1.She took lots of beautiful      during her stay in Europe．

2.Tom，believing in      is the first step on the road to success．

3.Tomorrow will be      ．How about going to Mount Gu for a picnic？

4.The teacher kept      the use of the idiom to me until I understood it．

5.He was facing a difficult      between staying with his family or working in Tibet．