1 . In response to our requirements, he turned up the _______ (音量). (根据汉语提示单词拼写)

2 . His body language spoke v______________ about his disappointment to his performance.(根据首字母单词拼写)

3 . How do you measure the ________ (体积) of the gas? （根据汉语提示单词拼写）

4 . He had a ________ of interests which made him an agreeable companion.

A．variety

B．volume

C．amount

D．numbers

5 . TV Ears has helped thousands of people with various degrees of hearing loss hear the television clearly without turning up the ________(音量). （根据汉语提示单词拼写）