我们认为节约用水非常重要。

A．people who attend their concerts need them
B．they want to make extra money
C．there are still people who prefer CDs to other formats
D．people who fail to attend their concerts need them

A．people spend a lot of time preparing a gift
B．people would cash out the gift immediately
C．people are eager to get a gift from a friend
D．people are less willing to give gifts

A．They would like to stay with other people.
B．They can maintain routine.
C．They will gradually lose the ability to live a normal life.
D．They would like to talk in a different way.