“______ do you exercise?” Three times a week.”

A.How long B.How often C.How far D.How many

解析試題分析:How long“多長時(shí)間”, How far“多遠(yuǎn)”,How many“多少”,How often詢問頻率,表示“多久一次”。 根據(jù)下文,一周三次?芍衔奶釂柕氖嵌嗑靡淮危l率),故選B,你多久鍛煉一次?
考點(diǎn):考查疑問詞辨析。

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