问题
选择题
The scientist _____ Canada and he will give us a talk when he _____ back.
A．has gone to/comes
B．has been to/will come
C．has gone to/will come
D．has been to/comes
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The scientist _____ Canada and he will give us a talk when he _____ back.
A．has gone to/comes
B．has been to/will come
C．has gone to/will come
D．has been to/comes
答案：A