Not only the parents but also their child ( )the National Stadium the Bird's soon.Not only the parents but also their child ( )the National Stadium the Bird's soon.A,have visited B is going to visit c are going to visit D have been to 请问：正确

Not only the parents but also their child ( )the National Stadium the Bird's soon.Not only the parents but also their child ( )the National Stadium the Bird's soon.A,have visited B is going to visit c are going to visit D have been to 请问：正确
Not only the parents but also their child ( )the National Stadium the Bird's soon.
Not only the parents but also their child ( )the National Stadium the Bird's soon.
A,have visited B is going to visit c are going to visit D have been to
请问：正确答案是哪个?并说出理由.

Not only the parents but also their child ( )the National Stadium the Bird's soon.Not only the parents but also their child ( )the National Stadium the Bird's soon.A,have visited B is going to visit c are going to visit D have been to 请问：正确
B
A和D不可能因为soon（不久后）是将来式,而A和D是过去完成式.Not only...but also做additional information（对不起,这个我不会知道中文怎么说）所以their child后面的动词跟着child作单数形式,排除C,剩下B.

B
Not only ..but also结构作主语,谓语动词采用就近原则