在句子的横线上，写出空缺处各单词的正确形式。（每空只写一词）。
________（平均）earnings in the state are about $ 1,5000 a month. 
Mike , a foreign ______ (商人),came to the factory last week.    
For            (各种各样)reasons, he had to leave his homeland.
The notice reads: “Don’t come in without          （允许）”.
Officers can’t work properly without certain important pieces of ___________(设备) .
It is well known that quality is more important than ______ (数量).
The doctor _____________ (表扬) the daughter for her courage this morning.
With the prices of goods going up ,The cost of living is increasing ___________(逐渐).
He stood up and went out, disappearing in the ____________（远处）.
They lived in London until quite ____________(最近).
This article deals with American literature and American cultural            (背景).
He stayed there watching out of ________ (好奇).
There was a            (广场)with trees and grass in it in the center of the city.
Plants             (倾向于) to die if you don’t water them regularly. 
It wasn’t until the 1960s that the Australian government came to realized the importance of passing laws to             (加强) the rights of the “ first Australians”.