He was thought about a maths problem.这个句子,可以把"was"去掉用吗?我不太明白为什么需要加was?

He was sad,and his thought about future was very somber. 改错：He thought about go to Greece. he thought only about his work急用 he thought about it hard 还是hardly? He was sitting there lost ______ thought. He was thought about a maths problem.这个句子,可以把was去掉用吗?我不太明白为什么需要加was? he thought hard about it hard about 是什么? he was so —— thought that he didn't see the pole on the roadA.buried inB.carsful withC.busy withD.serious about求详解 The more he thought about it ,the more questions he thought of ask.有一个错误, She thought I was talking about her daughter while I was talking about my daughter.翻译 He thought about it for a few days he thought about the problem for a few moments.thought about中的about是副词还是介词? Everyone thought he was joking,but in fact he was serious.为什么用was joking 英译汉It was the first time he’d ever thought about that麻烦翻译一下It was the first time he’d ever thought about that,and it seemed to me that he put all his energy into not falling rather than walking the tightrope He was made to practise the piano...practise the piano so much that,at times,he thought about giving up.However,he didn't quit,and he became a great pianist. maybe he thought it was the best way to show what he was he felt He_____for a while,and then he had a good idea.A.thought over B.thought of C.thought about I thought he was going to fire me