Most whales must come up for air after several minutes, a few can stay under water for an hour or more. A. while B. or C. for D. so 查看更多

 

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Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

A.whileB.orC.forD.so

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Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

A.whileB.orC.forD.so

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Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

A.while             B.or               C.for               D.so

 

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Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

A.while

B.or

C.for

D.so

 

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Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

A. while                  B. or                      C. for                       D. so 

 

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