1 . The board are discussing the possible ____________ they can take of the present economic situation.

A．notice

B．advantage

C．use

D．best

2 . Let the children go away. They’re making too much         .

A．voice

B．noise

C．music

D．sound

3 . 17． On yesterday’s interview, he didn’t make a（an） ____ at all; what was the matter with him?

A．apology

B．change

C．difference

D．appearance