I called you last night， but nobody answered． Where were you then？
Oh， I ____________ my pet dog in my yard．（ ）
A．walkedB．was walking
C．am walkingD．will walk
I called you last night， but nobody answered． Where were you then？
Oh， I ____________ my pet dog in my yard．（ ）
A．walkedB．was walking
C．am walkingD．will walk
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