-How________dohisparentslethimwatchTV?-Onceaweek.A.soonB.muchC.longD.ofte

发布时间：2020-08-04 21:19:49

-How ________ do his parents let him watch TV?-Once a week.A.soonB.muchC.longD.often

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D解析思路分析：how often是问时间频率的，答语Once表明．
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