Whenever it is, it is right for a student to ______ the school disciplines．

The old house of this area had to be ______ immediately so that the government could carry its flower-style-city programmer out.

Why does your brother _______ a sad look on his face these days?

The boys ______ the newspaper on the ground and began to read the news and articles in it.

At first, his teacher couldn’t’ realize that Lang Lang had a ________ for music though he said he wanted to learn the piano so much.