问题
选择题
―When was the house built?
―It was built in 1949 _______ the PRC was founded．
A．which
B．that
C．what
D．when
答案
答案：D
搜题请搜索小程序“爱下问搜题”
―When was the house built?
―It was built in 1949 _______ the PRC was founded．
A．which
B．that
C．what
D．when
答案：D