Not until Mr. Smith came to China ___ what kind of a country she is.
A．did he know B．he knew
C．he didn't know D．he could know
A

試題分析：考查倒裝句：句意：直到斯密斯先生來(lái)到中國(guó)，他才知道這是什么樣的國(guó)家。Not until Mr Smith came to China置于句首，主句要部分倒裝。助動(dòng)詞did放在主語(yǔ)前面，應(yīng)該選A。
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