The maths problem is very difficult .We must ( ) carefully.
The maths problem is very difficult .We must ( ) carefully.
The math problem is very diffcult.You must ___ carefully.
The problem is very difficult .You must think it over ------
the maths problem isn't very easy and it is difficult
初中英语34.---the maths problem is very difficult.Can you ___?--
The maths problem is very difficult,.I work it out,though 为什
The maths problem is difficult,but f___we work it out.
The maths problem is too difficult.math为什么加s
单选题the maths problem is ____ difficult _____
The problem is very difficult to ( )
The problem is very difficult .You must think about it caref
The problem is very difficult.We can't work it out.The probl