He attends the evening class ____, that is, Monday, Wednesday and Friday.
While building a tunnel through the mountain, ______ .
Much to our disappointment, things are not going so well as _______.
I’ll never forget such a beautiful place _____ I spent my childhood there with my grandma.
—Do you know the tower ___ in the heart of the city? —Do you mean the one ___ to the north of the city library?
—Do you know ____ the 2011 Xiamen International Marathon was held? —On January 2.