根据句意和汉语提示，在空格中填入正确的单词。（每空填一词）【小题1】Beijing has already _succeeded_(成功) in hosting the 2008

根据句意和汉语提示，在空格中填入正确的单词。（每空填一词）
【小题1】Beijing has already _succeeded_ (成功) in hosting the 2008 Olympic Games.
【小题2】Air pollution is __harmful_ (有害的) to people’s health.
【小题3】The large population also causes many other _difficulties_ (困难) for the whole nation.
【小题4】I can’t go shopping in big stores_unless_______ (除非)I travel for a couple of hours.
【小题5】He has __probably_ (大概) gone home.
【小题6】European________ (欧洲的) countries are beautiful .
【小题7】_Unless______ (一旦) you’re tired ,you should have a rest immediatetly

解析：【小题1】本题为完成时态的结构，故本题空格处用动词成功的过去分词succeeded。【小题2】在be动词后用形容词有害的harmful。【小题3】many后跟可数名词复数，故空格处填名词困难的复数形式difficulties。【小题4】在句中除非作为连词用，相当于如果不的意思，故本题空格处填如果不的单词unless。【小题5】修饰动词用表示大概的副词probably。【小题6】修饰名词用形容词欧洲的European。【小题7】表示一旦的含义，在句子连接从句的连词可用Unless来表示。

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