____do your sisters use the computer?------Every day A How much B How often C How many

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____do your sisters use the computer?------Every day A How much B How often C How many

B How often

B 多久 问频率

B 多久

答案是B!表示你姐姐多久用一次电脑?其实题目有问题,应该是does而不是do.!应为“your sister”是第三人称,故谓语要用复数。