1、C.an,The
2、D.pieces of bread
3、D.Never mind
4、C.made
5、D.voice
6、D.led,across
7、D.studying,important enough
8、A.stops
9、C.wake them up
10、 D.is
11、 B.as
12、B.himself
13、 B.because of
14、D.show them to you
15、A.listened to,hear
16、 D.to make
17、 C.put on
18、 C./,to