根据句意，用括号内所给单词的适当形式填空。

1. The street is_________(crowded) because the Spring Festival is over.

2. The shirt is only 15 yuan. It's _________(expensive).

3. They want to visit the world's ________(large) water slides.

4. There are some ________(clown) playing with children in the park.

5. Thanks for inviting me to your party. It's a carefully _________(organize) party.