although he tired his best,he failed to work out the problem
although he tired his best,he failed to work out the problem
He tired his best to work out the problem and ( ) he finishe
急问Although he was weak,__ he tried his best to do the work.A
I tried my best to work out the maths problem but I failed.同
He is busy to work out the difficult problem. 改错
He often o to help me work out the problem.
He found it difficult to work out the problem.
He can work out the problem a(
mark ____ work out this problem.so he goes to ask his teache
his ability to work out math problem is ----doubt because he
The boy did his best to escape___but he failed.A.punishing B
he is the second () out the problem.A.working B.to work C.wo