7．We _____have hurried all the way to the airport-the flight was called off because of the foggy weather．（　　）
A．mustn'tB．couldn'tC．needn'tD．wouldn't

分析 我們不必一路急急忙忙地趕往機(jī)場(chǎng)，因?yàn)橛捎诖箪F天氣，航班被取消了．

解答 答案：C 
A．mustn't 禁止，不允許；B．couldn't 不能；C．needn't 不必；不需要； D．wouldn't 不要；根據(jù)句意可知，由于大霧，航班已經(jīng)被取消了，所以就沒(méi)有必要再匆忙往那里趕了．故選C

點(diǎn)評(píng) 做此類題時(shí)，需要熟練掌握每一個(gè)情態(tài)動(dòng)詞的意義及用法，并且結(jié)合句意，找出貼合句意的情態(tài)動(dòng)詞．本題考查了needn't的用法，即needn't  意為：不需要；不必；強(qiáng)調(diào)了客觀條件．

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