Due to the violent nuclear leakage, the _____ of the electricity supplies put Japan’s northeastern cities in a sate of chaos.

Over years, scientists have made a great _____in the treatment of cancer.

Don’t blame yourself too much. Everyone has his ______ and weaknesses.

Tom is into sports.When young ,he had a _____about becoming a famous football player.

Father went to his doctor for＿＿＿＿＿about his heart trouble．