Mark did not know what he should do to help him.怎样改为同义句

Mark did not know what he should do to help him.怎样改为同义句 that did not sit well with mark. 啥意思,快! I did not know until yesterday, they did not know which end was 4.One Sunday,Mark decided to go sailing in his boat with his friend Dan,but Dan happened to be away.Dan''s brother John offered to go instead though he did not know anything about sailing.Mark agreed and they set out to sea.Soon they found themselves 英语翻译One Sunday,Mark decided to go sailing in his boat with his friend Dan,but Dan happened to be away.Dan’s brother John offered to go instead though he did not know anything about sailing.Mark agreed and they set out to sea.Soon they found 英语翻译One Sunday,Mark decided to go sailing in his boat with his friend Dan,but Dan happened to be away.Dan’s brother John offered to go instead though he did not know anything about sailing.Mark agreed and they set out to sea.Soon they found I did not like the man.Do you know? first ,i did not know who she was I like you,you did not know firmly She looked at me ( ) she did not know me. He actually did not know that you like In fact,you did not know they could have been I did not know 后的从句接什么时态 Why did you know?Why this world will not perish? did not know there is no chance to meet again. they did not know which was better是什么意思 英语翻译还是 “I did not know what you said”