根据首字母提示在横线上填入一个单词，使句子完整。
The shop has v__________ clothes for women customers to choose from.
He has a___________ a knowledge of computers by careful study.
It was an unusually hot summer and air conditioners were in great d_________.
From what is said above, we can draw a c_________ that his theory is practical. 
His wonderful speech made a strong i__________ on his audience.
The President says he is o___________ that an agreement can be worked out soon.
He was d_________ to hear that his son got admission to Beijing University.
It’s not necessary for parents to a_________ everything for their children.
Finding information in today’s world is easy. The c__________ is how you can tell if the information you get is useful or not.
They are trying to find a new a_________ to cancer treatment.