He was about to go to bed ____ there was a knock on the door.空中填什么?能不能说说填的词有什么相应的知识点?

英语翻译W:Well,he hasn't been himself lately.M:Is he still upset about the job?W:Yes,he was really disappointed.M:He can't go on being depressed forever .He has to start looking for something else. He was thinking about _____(go) shopping He was about to go to bed when the bell rang. He was so busy that he couldn't go to the concert.（改成同义句)顺便提一下：Rose knows something about the matter.（改为否定句）He is an American child.(改为复数形式)He was so busy that he couldn't go to the concert.（改成 Do you know when he came back?Yes.At about twelve.I was just about to go to bed.翻译 he didn,t go to school yesterday（）he was ill. beche didn,t go to school yesterday（）he was ill.because of还是because为什么? he didn't go to school because he was ill(改成同义句) he didn't go to school because he was ill yesterday(改为同义句) Because he was ill,so he didn't go to work. (改错) He didn't go to school,（because he was ill).对括号内提问 he didn't go to school ,because he was b__ ill 英语同义句转换 He didn't go to school because he was ill. The reason why he didn't go to school is that he was ill.是什么从句? He was so busy that he couidn't go to the concert[改为同义句] his brother___because he was illA.went to work.B.doesn't go to work.C.didn't go to work.D.don't go to work as i was about to go Tom didn't go to school because he was ill.Tom didn't go to school because of__ __. My friend,Tom,didn't go to school yesterday.I was w____ about him