– Can I watch TV now, Mum?
– No, you can’t watch ______ you finish your homework.
A. as                           B. after                        C. until
C
考查固定短語。根據(jù)句意：----我可以看電視嗎，媽媽？------不，直到你完成家庭作業(yè)才能看電視。
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