. The traffic in the city was ____ today, so Mary got home earlier than usual.
I still remember my happy childhood when my mother ______ take me to Disneyland at weekends.
The manager was satisfied to see many new products ______ after great effort.
Until now, we have raised 50.000 pounds for the poor children, ______ is quite unexpected.
Was it because Jack came late for school ______ Mr. Smith got angry?
Grandma pointed to the hospital and said, "That's ______ I was born."