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We were about to go outing _____ it began to snow heavily.

A. when
B. while
C. as
D. until
A
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科目：高中英語 來源：河南省期末題 題型：單選題

We were about to go outing _____ it began to snow heavily.
[     ]
A. when
B. while
C. as
D. until

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科目：高中英語 來源：2010年長春市高二年級(jí)開學(xué)驗(yàn)收考試英語卷 題型：單項(xiàng)填空

We were about to go outing______ it began to snow heavily.    

A．when

B．while

C．a(chǎn)s

D．until

 

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科目：高中英語 來源：河南省焦作市2009-2010學(xué)年高二上學(xué)期期末考試英語試卷 題型：014

We were about to go outing ________ it began to snow heavily．

[　　]
A．

when

B．

while

C．

as

D．

until

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