【題目】Only after Mary read her composition the second time the spelling mistake.
A.she has noticed
B.did she notice
C.does she notice
D.she noticed

【答案】B
【解析】句意：當(dāng)Mary第二次讀她的作文時(shí)她才意識(shí)到了文章里的拼寫錯(cuò)誤。only位于句子開頭需要用部分倒裝，此處時(shí)態(tài)應(yīng)為過去時(shí)，故選B項(xiàng)。

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