1.I want ( ) stay at home.
2.Fish ( ) fly in the sky.
3.Doctors often help the sick people in the ( ）
4.Mike kicks a good time.He is very ( )
5.look at the traffic light.It is ( ).Let us go
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
解得X=60 Y=84 Z=44
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
最后解得X=60 Y=84 Z=44