27. Ever since his grandmother gave him an iPad, he _____ more than 10 hours a day playing games and
chatting with friends online.
(A) has been spending
(B) spend
(C) was spent
(D) has been spent
詳解 (共 2 筆)
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在 since 用作附屬連接詞來表示「自...
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（Ａ）看到since要想到現在完成進行式...
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