根据句意，用括号中所给单词的正确形式填空，每空一词。
1. So far, I have to make a ______ (decide) about where to go for the coming summer holidays.
2. This year it has rained so ______ (heavy) in South China that lots of problems are caused.
3. When we walked past the playground yesterday, we found him ______ (lie) on the grass,
enjoying the sunset.
4. Jack is busy preparing for a party to celebrate his sister's ______ (twelve) birthday.
He wants to give her a big surprise.
5. —On April 14th, an earthquake hit Yushu and destroyed its ______ (beautiful) completely.
—It's a great pity.
