根据句意和汉语注释,在答题卷标有题号的横线上,写出单词的正确形式。
His illness was more (严重的) than the doctor first thought.
Zhanglong Nature Reserve is a _____________(完美的) place for some rare birds.
It is said that the ___________________(温度) tomorrow will drop below zero.
Would you please _______________( 接受) my invitation to the party.