it is _(think) the population of the world has passed 6.5 billion so far

问题描述:

it is _(think) the population of the world has passed 6.5 billion so far

填thought。因为这里是被动语态,用过去分词形式。
句意:据认为:世界人口目前为止已经超过65亿。

thought,被动语态
It is thought that ...据认为...
真心希望有帮助(*^__^*) 嘻嘻……

it is _thought_(think) the population of the world has passed 6.5 billion so far