1 . 根据句意需要选择合适的词或短语将句子补充完整。

as if       in ruins       concentrate on        curious about        make such a difference

1. I am___________everything to do with nature.（好奇）
2. In less than one minute, a large city lay _________.
3. The boy next to me tried to talk to me so I couldn’t ________my work.
4. It seemed _______ the world were coming to an end.
5. I have no idea a letter could __________to me.