一.括号部分提问.二.还有几道数学题不知道怎么列比例式方程
1.I(takethebus提问)toschool.
2.hebought(abook提问)lastweek.
3.she(watchedtv提问)yesterday.
1.1/2X:3/8=1.2
2.3/8:X=1/3:1/10
3.10.5/X=0.5*0.7/4