A:don't play
B:not playing
C:not to play
D:not play
直接写得数.
1.4﹣0.6= 9.4﹣0.8= 2.5+0.7= 505÷5= 720÷9=
60×50= 6.4﹣3= 0÷68= 50﹣50÷5= 540÷6=