the maths problem isn't very easy and it is difficult
the maths problem isn't very easy and it is difficult
The maths problem is very difficult,.I work it out,though 为什
The maths problem is very difficult .We must ( ) carefully.
The maths problem is difficult,but f___we work it out.
It is difficult () out this maths problem
The maths problem is not easy( )
The problem is very difficult.We can't work it out.The probl
the problem is very difficult.we can't work it out.(合并)the p
---The answer to the question is very easy,isn't it?---Yes,b
The problem is very difficult.He can't work it out.(合并为一句)
the problem is very difficult.we can't work it out.(合并一个句)th
The problem is very difficult.We can't work it out.(51.合并)