【題目】Without coconuts, most of the tropical islands in the South Pacific ________ uninhabitable for both animals and people.

A.must have remainedB.may have remained

C.need have remainedD.would have remained

【答案】D

【解析】

考查含蓄條件句。句意：如果沒有椰子的話，大多數(shù)南太平洋的熱帶島嶼對于人和動物而言都將會不適宜居住。本處考查含蓄條件句，這里從句可以用另外一種形式If there were no coconuts, 表示與過去事實相反的假設(shè)，主句結(jié)構(gòu)：主語+should(would, could, might)+現(xiàn)在完成時+其他。故選D。

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