43. Old dogs learn no new tricks, _______ how to send e-mails to my friends in Canada. A. It was not until last Sunday I learnt B. Not until last Sunday when I learnt C. Not until last Sunday that I learnt D. Not until last Sunday did I learn些題怎么翻譯呀？謝謝，選項哪個正確

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D. Not until last Sunday did I learn(老狗學不了新把戲) 老年人很難適應新事物,直到上個禮拜我才學會怎么發E-mail給加拿大的朋友 Not until 開頭要部分倒裝