题目内容：
Some are reading magazines,______ others are playing cards.
[ ]
A. or B. for
C. so
D. while
参考答案：
单选题：Some are reading magazines,______ others are playing cards...
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B. for
C. so
D. while
B. for
C. so
D. while
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It is not immediately clear ________ the financial crisis will soon be over.[ ]A. sinceB. whatC. whenD. whether
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
— Are you good at either math ________ physics?— I'm not g..
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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
At school, some students are active ______ some are shy, yet..
At school, some students are active ______ some are shy, yet they can be good friends with one another.[ ]A. whileB. althoughC. so D. as