I think___difficult for me___the maths problem
Maths Problem, Call for Help!
they___the maths problem when i came in
They____the maths problem when I came in.
maths problem
I spent two hours on this maths problem.
This maths problem is____________ and I can do it___________
I spent two hours on this maths problem这句话里on this maths pro
A-Maths problem
Maths Problem,Help Me!
{{..Easy的Maths problem..]]
An important maths problem
the maths problem is too difficult for me to work out还是to wo