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—IheardthatmanypeopleplantedtreesonTreePlantingDaywitho...

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問題詳情:

—IheardthatmanypeopleplantedtreesonTreePlantingDaywitho...

—I heard that many people planted trees on Tree Planting Day without stepping out this year. I wonder    ▲    .

—They did this by taking part in“cloud planting" on the Internet.

A. what they did        B. how they did that     C. why they joined the activity

【回答】

B

知識點:賓語從句

題型:選擇題

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