Which tour attraction in China have you ever ____? A. traveled B. traveled to
问题描述：
Which tour attraction in China have you ever ____? A. traveled B. traveled to
什么时候 ，问句句末的不及物动词要加介词？
答
B因为前面有Which tour attraction 所以要用介词,如果是Where就不用了
当是where ,when之类时
例如Which place do you want to go to=Where do you want to go
Which year was it set up in=when was it set up