---do the students exercise a week ?---Once or twice.A. How oftenB. How longC. HowD. How m

发布时间:2020-08-22 11:25:06

---    do the students exercise a week ?
---Once or twice.
A. How often
B. How long
C. How
D. How many times

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A. How often
B. How long
C. How
(答案→)D. How many times
解析: A.多久一次  B.多长   C.怎样   D.多少次。根据答语:一次或者两次。可知选D。
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