He thought he had d______ working out the math problem.
He thought he had d______ working out the math problem.
He had some d__ in working out the problem.
He had no difficulty working out the problem为什么是working
He worked out the math problem f__.
He spend an hour working out the math problem.的意思和同义句
He had some ___in working out the problem.why using difficul
He worked out the math problem ( )如题
He ________ (毫不费劲)working out the problem
He had worked out the problem when Jim called him
he thought he had solved the problem,but that was not the ca
He had no difficulty__the problem.a:working out b:to work ou
He had no difficulty working out the problems.把 working out