Question

【题目】As we all know, many travellers visit the Great Wall every year.（改为被动语态）

As we all know, the Great Wall _________ _________ by many travellers every year.

Answer 1

【答案】is visited

【解析】

句意：众所周知，每年很多人去参观长城。

根据“every year”判断是一般现在时；the Great Wall做主语，是单数名词；谓语动词visit变成被动形式is visited。故答案为is visited。