问题
选择题
To their great fear，they found________in the heaviest snowfall they had ever had.[ ]
A．they were catching
B．themselves caught
C．they had caught
D．themselves catching
答案
答案：B
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To their great fear，they found________in the heaviest snowfall they had ever had.[ ]
A．they were catching
B．themselves caught
C．they had caught
D．themselves catching
答案：B