完成句子。根据中文意思完成句子。
(1)He didn't know how to ____ （处理）the waste.
(2)I got an"A"in the exam last time，and my father____ （满意）me.
(3)由于环境污染，这种虎在该国濒临灭绝。
This kind of tigers has nearly ____ in the country because of environmental pollution.
(4)我借这本书已经有一个月了。
I ____ the book for a month.
(5)我们必须立刻执行那个政策来控制污染。
We must ____ the policy to control the pollution at once.
；②
；③
；④
。