I always try to be________to others when walking my pet dog along a pavement and step to the side with my dog to let them pass by.
. The 2010 Shanghai World Expo is well worth ______.
I am interested in traveling. It is ______ but ______.
The windows haven’t cleaned for a long time. They need ______.
Our teachers are really ______. They often work in their office far into the night.
Visitors were at the pictures that the guide showed.