【題目】The leaders have already reached an agreement on economic affairs.(改為否定句)

The leaders ________ reached an agreement on economic affairs ________.

【答案】haven’t yet

【解析】

句意:領(lǐng)導(dǎo)人已經(jīng)就經(jīng)濟事務(wù)達成了協(xié)議。

原句是現(xiàn)在完成時態(tài),其否定句需在助動詞have后面加notalready不可用于否定句,需改為yet。根據(jù)句子結(jié)構(gòu),可知填haven’t; yet。

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