固定的动词短语look for：寻找（去掉for后look没有寻找的意思,所以介词for不能前置）
非固定的动词短语live in：居住（去掉in后live仍有居住的意思,所以介词in可以前置）
同理固定动词短语look after中after不能前置
30.This machine, ______for many years, is still working perf
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相关问题
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30.This machine,______for many years,is still working perfec
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this machine,______for many years,is still working perfectly
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This machine __________ It has worked for years.
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I bought the washing machine twenty years ago .It still work
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16.He has worked in this school for many years,_______ he?A.
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_____________(study) volcanoes for many years,I am still ama
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英语改错 he is work in this company for ten years
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翻译It still is for many
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The sweater is still p_____this year.
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when___,the washing machines still doesn't work.