23.There ought to be an exam this week, ? A.oughtn’t it B.isn’t it C.oughtn’t there D.isn’t there 查看更多

 

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There ought to be an exam this week, _________?

A.oughtn’t it        B.isn’t it       C.oughtn’t there         D.isn’t there

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There ought to be an exam this week, ________ ?

[  ]

A.oughtn't it

B.isn't it

C.oughtn't there

D.isn't there

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There ought to be an exam this week, ________?

[  ]

A.oughtn't it

B.isn't it

C.oughtn't there

D.isn't there

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