Hey，Kate，I called you at 6：30 yesterday evening，but you didn't answer．
Oh，sorry．I ______ at that time．（ ）
A．am doing the dishesB．do the dishes
C．was doing the dishes
Hey，Kate，I called you at 6：30 yesterday evening，but you didn't answer．
Oh，sorry．I ______ at that time．（ ）
A．am doing the dishesB．do the dishes
C．was doing the dishes
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