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题型：单选题题类：常考题难易度：普通

仁爱科普版九年级上Unit 4 Amazing ScienceTopic 1 When was it invented?同步练习

Do you know when the radio ________?

A、invent B、is invented C、was invented

举一反三

— Who's the little baby in the photo, Susan?
— It's me. This photo ten years ago.

—Oh, my God! I can't find my key to the office.
—Don't worry. Perhaps it______________ in your home.

The letter _____ three days ago and it _____ yesterday.

A lot of stories by grandma when I was young.

—Tom! I looked for you everywhere at the party last night.

—Oh, I to the party.

She was very happy because she _____ hold the fashion show.

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