I spent half an hour working out the math problem.这里的working
I spent half an hour working out the math problem.这里的working
it spent half an hour working out the pysics problem.(保持原意)
He spend an hour working out the math problem.的意思和同义句
1、I spent half an hour(working on)this difficult math proble
I have __________(困难) working out the math problem.
He thought he had d______ working out the math problem.
the math problem is really difficult I am working it out ()
I spent half an hour finishing ___ work.这里要填the吗?为什么?
I have problemS ___ working out the problem
I spent two hours working out this problem.(改为同义句)
是用动名词还是动词不定式working(to work) out the math problem like this
I spent half an hour geting to the shop.的同义句