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  • 1. 用a 或 an 填空。

    1. (1) There's computer on the desk.

    2. (2) This is orange. That's apple.

    3. (3) I have egg. It's yellow egg.

    4. (4) There's octopus. It's small octopus.

    5. (5) Which do you prefer, umbrella or raincoat?