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In the country, about 30% of the land ________ yet.

[  ]
A.

hasn’t been farmed

B.

haven’t been farmed

C.

has already farmed

D.

have already farmed

答案:A
解析:

该句主语为不可数名词land,所以谓语应用单数,可排除B、D项;yet通常与完成时态连用,并且用于否定句,所以答案为A项。


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