We were about to go outing it began to snow heavily. A. when B. while C. as D. unt——青夏教育精英家教网——

摘要： We were about to go outing it began to snow heavily. A. when B. while C. as D. until

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

A. when
B. while
C. as
D. until

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

A．when

B．while

C．as

D．until

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

when

while

as

until

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