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【单选题】
You should exercise three or four times a week. You ___ exercise every day.
A.
don't have to
B.
have to
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Anna ___ learn how to manage her schedule. She doesn't manage it very well.
A.
has to
B.
have to
【单选题】What are Martin’s symptoms?
A.
Heisalwaysworriedandunhappy.
B.
Heisalwaystiredandoftensick.
相关题目：
【单选题】He ____ work today. His office is closed today.
A.
doesn't has to
B.
doesn't have to
【单选题】Anna ___ learn how to manage her schedule. She doesn't manage it very well.
A.
has to
B.
have to
【单选题】We ____ take tennis lessons. We play tennis very well.
A.
don't have to
B.
have to
【单选题】How many hours does he work every week?
A.
15or16
B.
50 or60
【单选题】What are Martin’s symptoms?
A.
Heisalwaysworriedandunhappy.
B.
Heisalwaystiredandoftensick.