① As they do,heat levels will drop,and so will levels of radiation.(drop)
② Look out !Crocodiles float lazily,behind us !(lazy)
③ It will be extremely disappointing if this does not happen.(disappointed)
④ This book tells how to control your temperature.(temperature)
⑤ Most people hate walking in the rain.（改为一般疑问句）
Do most people hate walking in the rain?
⑥ This bike is not so expensive as that one.（改为肯定句）
This bike is less expensive than that one.
⑦ ' I'm cold,hungry and disappointed,' he said sadly.（保持句意基本不变）
"I'm cold,hungry and disappointed,' he said in feelings of sadness.可以说一下理由嘛。1、drop用作不及物动词，表示下降，主动语态2、lazily副词，作float的方式状语3、disappointing,用ing形式，作形容词，表示“令人失望的”4、词句有两种可能，一是控制温度，如题；另一种是control your temper控制脾气，不发脾气5、6 略7、也可用with feelings of sadness, 介词+名词形式=形容词=副词