-_______do you spare time to visit your parents every month?
-Twice.
A.How longB.How oftenC.How soonD.How fast
B

試題分析:考查特殊疑問詞。根據(jù)下文的twice,說明是對頻率進(jìn)行的提問。故使用how often, how long是對一段時間進(jìn)行提問。How soon是對將來時進(jìn)行提問。故B正確。
點評:how long是對一段時間進(jìn)行提問。How soon是對將來時進(jìn)行提問。How often是對頻率的提問。在平時要多加辨析和識記。
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