I don’t understand ______ such a silly question in class yesterday.

A. why did John ask B. why John asked

C. why is John asking D. why John asks

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Cellphones help us easily find people anywhere at any time. However, using cellphones too often may cause cancer. It’s reported that people who used a cellphone for ten years or more were more likely to get brain cancer.

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Change ears when you’re using your cellphone. Before putting it to your ear, wait until the person you are calling picks up the phone.

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_________________________________________________________________

4._________________________________________________________________

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_________________________________________________________________

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