根据下列句子及所给单词的首字母写出所缺单词。
1. Because the office is so far away from his home, he has to d__________ to office every day.
2. I was s_________ to see Ann in the street. She went to America three years ago.
3. When you are in the museum, remember not to t__________ things on show.
4. We need two more students to help me c_________ these heavy bags.
5. Please make sure that you have got a c_________ answer before you hand in your paper to me.
