It was four o'clock in the afternoon____he and his grandpa reached the museum in Guanghan____an official warmly received
问题描述：
It was four o'clock in the afternoon____he and his grandpa reached the museum in Guanghan____an official warmly received them.
A.that ,that B.before ,which C.since ,where D.when ,in which
答
D
很确定.
首先这不是个强调句,因为在was后面少了一个at
那么,第一个空是定语从句修饰前面的时间
第二个空也是定语从句,修饰museum