【題目】—________do you help your mom with housework?

—Twice a week.

A.How longB.How oftenC.How far

【答案】B

【解析】

句意：——你多久幫你媽媽做一次家務(wù)?——一個(gè)星期兩次。

考查特殊疑問句。How long多久（對(duì)一段時(shí)間提問）；How often多久一次（對(duì)頻度提問）；How far多遠(yuǎn)（對(duì)距離提問）；根據(jù)“Twice a week.”可知此處是頻度，所以用“How often”，故選B。

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