物质的性质决定其用途,请用相应物质的化学式填空.
(1)用于人工降雨 ____ ;
(2)形成化合物种类最多的 ____ ;
(3)用来制作肥皂____ .
- We failed in the singing competition.
- . Better times are waiting for you.
I'm considering______a teacher after graduation because a teacher is often considered______the engineer of human souls.