There must be many people ()through the jungle every day
题目
There must be many people ()through the jungle every day
There must be many people ( )through the jungle every daytrekking?为什么?
答案
因为前面有系动词be,这里的句型是there be 句型,就是There are many people doing sth.(are遇到助动词mus必须变成原型be)
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