按要求做题。
1. we’re, relaxed, pretty time, not, in, about, Switzerland (连词成句)
2. I don't know how I can get to the zoo.（改成简单句）
I don't know how to the zoo.
3. To understand what he is saying is too difficult. (改成同义句）
too difficult to understand what he is saying
4. The students should wear their uniforms at school.（对划线部分提问）
5. I need to look up the word in the dictionary．（一般疑问句）
you to look up the word in the dictionary?