-Life itself tells us it is necessary to learn to be     .One can hardly survive without help from other people in the world.

—What a pity ! I’ve not got a ticket for the football match .—Don’t worry , It’ll be broadcast        .

If you are ________about Australian cities，just read the book written by Dr. Johnson.

As many as 100 species of fish, some ____ to these waters, may have been affected by the pollution． 

This bird is really lovely， and I’ve never seen ______ one.