In ______________, fashions changed and many factories closed down.

The story of Whitney Houston is a good example of how drugs and bad relationships can _______ even the most talented stars. 

(2013 ·山西太原部分中学高三统一检测)To tell the truth, what you said was too ________ for us to understand.

They have been told that if they want to build a highway between the two towns, they should first try to____ how much it is going to cost.

He ________ a wonderful speech at the graduation ceremony.