Mr. Brown repeated his words to his son, raising his voice a bit, but still        no answer. 

China’s economic and social development requires more substantial reforms, as unnecessary government influence on the private sector has _______ an abuse of authority.

 Mr. Liu born in a poor family, _____a lot of suffering when still a child.

I had wanted to take the career of being a model, but I ________ not good at dealing with constant media attention.

The army officer _______ his men to fire as soon as the enemies came up.