8．Experts warn that medical waste from hospitals,if____ properly,may contribute to spreading diseases．A．not handled B．not being handled C．not to be handled D．not having been handled为什么不能用动名词形式？是if 后不能接还

8．Experts warn that medical waste from hospitals,if____ properly,may contribute to spreading diseases．A．not handled B．not being handled C．not to be handled D．not having been handled为什么不能用动名词形式？是if 后不能接还 Toward this point of RTToward this point of view,some experts warn that it is not wise to be just waiting. 请帮我分析这句英语的主谓宾定状补结构Experts warn that people taking driving selfies are putting their safety and that of those around them in danger warn of danger that is not there 英语翻译And parent-child activities,from shopping to sports,involve a feeling of trust and friendship that can continue into adulthood.No wonder greeting cards today carry the message,To my mother,my best friend.But family experts warn that the 句子结构分析Scientists are defying government experts to warn that babies are being exposed to high levels of aluminium in formula milk,which they claim could damage their health.科学家不认同政府专家的观点,警告大家婴儿所喝 英语翻译There is uncertainty about its return back to 8% as analysts warn that many jobs from recent layoffs are unlikely to return.谁能给翻译一下? 以下题目按我问的回答,1.In the survey they listed twelve kinds of food _______would affect the work of the brain． A．which the experts believed B．that were believed C．the experts believed that D．the experts believed 问：①B为什 In the survey they listed twelve kinds of food ___would affect the work of the brain．A．that were believed B．which the experts believedC．the experts believed that D．the experts believedwhy the answer is B not experts were convinced that the animal was a puma.experts were convinced 是被动么?that 后面 是 什么从句? warn of danger that is not there 这是什么句型 求详解 Experts have been warning ---of the risks caused by passive smoking.A at a time B at one time C for some time D for the time 选C这是时间状语吧那么 warn of sth 有这搭配吗 不是warn sb of sth Experts have been warning ---of the helth risks caused by passive smokingA at a time B at one time C for some time D for the time 选C 这 不是时间状语吗一段时间,那warn of sth有这搭配吗 不是 warn sb of sth 的搭配吗 英语翻译“Study Finds Web Antifraud Measure Ineffective”Internet security experts have long known that simple passwords do not fully defend online bank accounts from determined fraud artists．Now a study suggests that a popular secondary secu Were the experts sure that the animal was a puma?Why? 英语首字母填空（Experts say that students usuaiiy need eight to ten hours'.) Many experts think that India'spopulation may be larger than China's by 2020 翻译 Experts believe that young people are drinking more alcohol than ever