Complete the sentences with the given words in their proper forms. (用括号内所给单词的适当形式完成句子，每空格限填一词)
1. I need more __
_________ for books in my roo
m .(shelf)
2. Tom, you should clean the bedroom by __________. (you)
3. On Hainan Island, a lot of __________ (tour) enjoy swimming in the sea and eating seafood.
4. Guiding Dogs help blind people cross the road ________. (save )
5. You mustn’t be ___________ (kind) to your new kitten. She’s so lovely.
6. Her leg was ____________ in the accident last week. (break)