根据句意及汉语提示补全单词（注意用其适当形式）
（1）Giraffes are interesting and________（聪明的）．
（2）I want to go to the________（动物园）this Saturday．
（3）The lions are________（吓人的）．I don’t like them．
（4）There are all kinds of________（动物）in the world．
（5）The cat is kind of________（无聊的）．She sleeps all day．