Some are reading magazines,______ others are playing cards...

Some are reading magazines,______ others are playing cards.[ ]A. or B. forC. so D. while

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It is not immediately clear ________ the financial crisis wi..

It is not immediately clear ________ the financial crisis will soon be over.[ ]A. sinceB. whatC. whenD. whether

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Make full use of your time _____ you can achieve what you de..

Make full use of your time _____ you can achieve what you desire. [ ]A. so B. or C. butD. and

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— Are you good at either math ________ physics?— I'm not g..

— Are you good at either math ________ physics?— I'm not good at math, ________ do I do well in physics.[ ] A. or; orB. nor; norC. nor; orD. or; nor

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A good idea occurred to Mr. Baker________ to his invention ..

A good idea occurred to Mr. Baker________ to his invention recently. [ ]A. while applyingB. while appliedC. while he was applying himselfD. while applying himself

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