They kept trying they must have known it was hopeless. A. if B. because C. when D. where 查看更多

 

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They kept trying _________ they must have known it was hopeless.

A. if         B. because       C. when   D. where

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They kept trying _________ they must have known it was hopeless.

A. if       B. because      C. when  D. where

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They kept trying _____ they must have known it was hopeless.

A. if       B. because

C. when  D. where

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 They kept trying _________ they must have known it was hopeless.

A. if                               B. because                    C. when                       D. where

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They kept trying _____ they must have known it was hopeless.

A. if            B. because

C. when           D. where

 

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