如果先行词有the last /the first 等序数词或形容词比较级或最高级修饰先行词,引导词就要用that .这是特殊的规律…

因为”that”在本句中作为visit后的宾语,因此可以省略.

A就是省略了”that”.

选A

A.is the best answer.

The last place (that) we visited was the Science Museum.

The last place where we went was the Science Museum.

visit vt.that 关系代词作宾语因被last修饰用that

go vi.where属关系副词作状语

.

选B.where we visited =we visited “in it” ,”in it” = where.