Some pre-school children go to a day care center, __________ they learn simple games and songs.
A modern city has been set up in _____ was a wasteland ten years ago.
Is this the reason ______at the meeting for his carelessness in his work?
She speaks as if she ____on the spot.
______ it______ for your help,I couldn't have made any progress.
-Does the young man standing at the gate_____ the car? -No. The car is _____ his father.