根据下列句子及所给单词的首字母写出所缺单词。（每空限填一词）
1. When I was younger, my h___________ was collecting stamps, but now I like painting.
2. Don’t f___________ to turn off the lights when you leave the classroom.
3. I’m feeling h___________ now. Where can I get something to eat?
4. The box is too heavy for me. Would you please help me c___________ it?
5. I’m dreaming of a white Christmas because it never snows in w___________ in Guangzhou.