题干
— Is James at home?
— No, he __________ Ya'an to be a volunteer.
A：has been to
B：has gone to
C：have gone to
D：is going to
答案(点此获取答案解析）
B
— Is James at home?
— No, he __________ Ya'an to be a volunteer.
A：has been to
B：has gone to
C：have gone to
D：is going to
