问题
选择题
______of them has been to Australia several times, so they know the Opera House very well.
A．Both
B．All
C．None
D．Each
答案
答案：D
根据后文动词为has。故选D
搜题请搜索小程序“爱下问搜题”
______of them has been to Australia several times, so they know the Opera House very well.
A．Both
B．All
C．None
D．Each
答案：D
根据后文动词为has。故选D