Question

The Science Museum, ______we visited during a recent trip to Britain, is one of London’s attractions.

A．which

B．what

C．that

D．where

Answer 1

A

which 引导非限定性定语从句，指代先行词the Science Museum,同时又在从句中作visited 的宾语。Where为关系副词，不能作宾语，that不能引导非限制性定语从句，what不能引导定语从句。