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單項選擇:—Howdidyoufinishtheworksoquickly?—Thecomputerhelpe...

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問題詳情:

單項選擇:—Howdidyoufinishtheworksoquickly?—Thecomputerhelpe...

單項選擇:

— How did you finish the work so quickly?

—The computer helped me. It’s really _______ useful machine.

A. a                      B. an                     C. the                    D. one

【回答】

A

知識點:冠詞

題型:選擇題