3. He is seventy now. He        the vegetable garden for twenty years (care)

他今年70歲，20年來一直在管理著這個蔬菜園。

3. has been taking care of本題考查care構(gòu)成的短語，同時根據(jù)時間狀語for twenty years判斷應(yīng)該用完成進行時態(tài)來表達"一直在做"。

題目來源：高考英語組合訓練多項選擇+完成句子 > 組合訓練41-42

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