Without proper lessons, you could ____ a lot of bad habits when playing the piano.

 Wang Haijian, Hubei bombing principal, was shot to death for his leading role in __________ a homemade bomb near a branch of state-owned China Construction Bank in Wuhan on Dec. 1, 2011.

That car accident ______ all his life. After that he was limited to a wheelchair.

my mother opened drawer  to_________the knives and spoons.

Before making your speech, you'd better ______ your thoughts and ideas.