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Dropping litter ______ never allowed in our city.

A.don’t           B.are              C.will              D.is

 

【答案】

D

【解析】

试题分析:句意:我们城市从来不许乱扔垃圾。结合语境可知本句描述的是客观性动作,故用一般现在时态,动名词做主语表示抽象含义,故谓语动词用单数,选D。

考点:时态及主谓一致

点评:英语中的时态主要是借助于时间状语与上下文语境来进行判断。解答此类题型,首先要注意句子中的时间状语,如果没有则要通过分析上下文,结合语境来判断句子的时态。英语中的现在进行时态和现在完成时态中的助动词,往往因为主语的不同,而有所不同,需要注意与主语保持一致。

 

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