题目内容
— ______ does Tom surf the Internet ?
—Twice a week .
—Twice a week .
A.How much | B.How many | C.How long | D.How often |
D
四个选项含义分别是多少(不可数名词)、多少(可数名词)、多久和多久一次。从答语一周两次来看,应选D。
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