问题
选择题
As I ___ TV, my father ___sleep.
A．watched; fell
B．watched; was falling
C．was watching; fell
D．was watching; was falling
答案
答案：C
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As I ___ TV, my father ___sleep.
A．watched; fell
B．watched; was falling
C．was watching; fell
D．was watching; was falling
答案：C