都是主动表被动,有什么区别啊
问题描述：
都是主动表被动,有什么区别啊
1The air is thin()in the high mountains.
a;to be breathed
b;to breathe
c;to breath
d;for breathe
2With so much work (),he doesnot know whether he has time to enjoy the concert.
A;to be done
B;doing
C;done
D;to do
答
B
D