Whenhewasretiredandwentbackhomein

問題詳情：

When he was retired and went back home in _____, he was already in______.

A. the fifties; his sixty              B. fifties; his sixties

C. the fifties; his sixties            D. fifty; sixty

【回答】

知識點：數詞 量詞

題型：選擇題