Lots of visitors come no Nanjing because she is city.

. — Why were you so late for work today? — ____ to the office was not very easy this morning because of the traffic.

. As a volunteer, he often goes to the hospital to ________ the sick.

Before I talked with ______ scientist, I had never met_____ clever person like him.

Do you prefer drawing to music? — No, I like music ________ .