根据下列句子及所给汉语注释，在句子右边的横线上写出空缺处各单词的正确形式。（每空只写一词）
【小题1】Only then did I realize the importance (重要性) of learning English.
【小题2】All countries, big or small, should be equal .(平等)
【小题3】The narrow (狭窄的) high way should be broadened.
【小题4】Luckily/Fortunately (幸运地)， he passed the exam successfully.
【小题5】He experienced (经历) a terrible traffic accident last month.
【小题6】With the development (发展) of the economy, more and more people buy private cars.
【小题7】We will remove the furniture (家具) from our house.
【小题8】A policeman asked: “What caused (引起) the fire in the hotel?”
【小题9】The meeting will be held on next Wednesday (星期三).
【小题10】We must do something to reduce the air pollution .（污染）
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解析：【小题1】importance 名词重要性：importance;句意;直到那时我才意识到学习英语的重要性
【小题2】equal 形容词平等的：equal
【小题3】narrow 形容词狭窄的：narrow
【小题4】Luckily/Fortunately 副词幸运地：Luckily/Fortunately
【小题5】experienced 动词经历，体验：experience,本句是过去时。
【小题6】development 名词发展：development
【小题7】furniture 名词家具：furniture,这是一个不可数名词。
【小题8】caused 动词导致：cause，这句话是过去时。
【小题9】Wednesday 名词星期三：Wednesday
【小题10】pollution 名词污染：pollution