This photo of mine was taken__________ stood the famous high tower.
______ different kinds of pianos, the factory is sure they can satisfy people’s need.
______, most teenagers now listen to rock music. However, John likes classical music better.
The city ______ by an army of 600 men was difficult to take.
At the meeting they discussed three different ______ to the study of mathematics.
He sat back on the chair, listening to the MP4 and ______.