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—What’s his monthly income?
—Well, he ________ earn as ________ as 4,000 dollars a month when his business runs well.
A.can; muchB.might; manyC.must; farD.should; high
A
考查情态动词和词义辨析。“他的月收入是多少?”“噢,当他的生意做得好的时候,他一个月能赚4000美元。”can“能够,可以”;might没有can的可能性大;must“必须”;should“应该”。much“多”,修饰不可数名词,as much as“多达”。故选A。
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