摘要： ---Mum, I failed the test again. --- Oh, I knew it. How can you learn anything you spend all your free time watching television. A. while B. as C. when D. unless
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---Mum, I failed the test again.
--- Oh, I knew it. How can you learn anything ____ you spend all your free time watching television.
A. while B. as C. when D. unless
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