改为同义句：They could not buy a house because they were very poor.They couldn't ____ ____ pay for a house.

They arrived so late that they could not grow crops.改为同义句.30分钟内要. 根据要求改写句子,每空填一词.they turned around but could not find any unusal things (改为同义句）They turned around but could find ___ ____ could you please not follw me around改为同义句 改为同义句：They could not buy a house because they were very poor.They couldn't ____ ____ pay for a house. They are not in different classes.【改为同义句】 They are not friendly to us.改为同义句 They could not catch the train because of the heavy traffic.（改为同义句）The heavy ____them ____ ____ the train. they could not speak English when they were 8的同义句 He could not get home it snowed heavily .（改为同义句） He could not get home_ _the heavy snow. They do not have to come.（改为同义句） They ___not come. The old man could not see anything.(改为同义句） i was so frightened that i could not say a word.改为同义句 He was so tired that he could not move farther.改为同义句谁会? it could be not good for you both.改为同义句 Many students don not know how they should learn English改为同义句 一个超级简单的同义句转换They did not know where they could go.They did not know ___ ____ ___. 1.They stopped after they were safe at home.(同义句） They_____stop_____they were safe at home.2.They listened but could not understand anything.(同义句）They listened but could ______ _______. They are both students.改为同义句