大家都相信汉语将会在全世界得到更广泛传播（it is believed that )

大家都相信汉语将会在全世界得到更广泛传播（it is believed that ) it is believed that it is generally believed that It is believed that society would... 每个选项都解释下It is believed that basketabll ,________on December 'it is believed that +从句' 中that可以省略吗? It is generally believed that teaching is____it is a science it is believed that traveling in natural mountains is very__ It is generally believed that teaching is_____it is a scienc It is generally believed that being hard-working is just____ it is generally believed that true friendship is like health It is advised that,It is believed that,It can be argued that