Mary has been trained hard for the last two years —______ she did so well at the track and field meet yesterday

______people travel every year— Perhaps when we are talking about it. More than 100 planes have taken off around the world.

Take an active part in sports or other activities you enjoy ,________ you can meet various kinds of people

______ life pace continues to speed up, we seem to be losing the art of enjoyment

How foolish I was!— ________ you have realized that，stop blaming yourself．