_Chasing pop stars is generally considered to be_______young people like while middle-aged people keep a cool head about this.
—Where is Lu Wenjie? —I have no idea.He__________ be in the library.
. — You must obey every word of mine! — _____ I don’t?
16. The river,______the bank are covered with trees, is very long.
While building a tunnel through the mountain, ________ .
Lei Feng is always ready to help others when they are in trouble and he never ______ their request.