there remain some problems to be solved中的remain可以用be代换吗

翻译：There are some points that you remain confused about. There are some points that you remain ____about.考点是什么There are some points that you remain confused about. there remain some problems to be solved中的remain可以用be代换吗 Some choose to remain,then,silence? remain remain PR PR pr. 英语翻译there are places i'll remember all my life though some have changed some forever not for better some have gone and some remain all these places have their moments with lovers and friends i still can recall some are dead and some are livin There are some ---(German)there. 英语翻译There are some( ) ( ). there are some there() some drinks some where out there there are some -------(gooes) 第一题是:There are some points that you remain ___ about .为什么要填confused而不是confusing?第二题是:There must be no life on the Mars for ___ of air there .为什么要填lack而不是lacked或lacking?然后顺便解释一下keep doi some baby pandas often die easily.改为同义句 some baby pandas are often ____ ____die more than nature reserves protect pandas in china.改为同义句there are more than natire reserves ____ ____ pandas in china是more than 30 nature reserves pr