摘要：No one knows exactly when our ancestors started talking.but new evidence suggests might have happened a long time ago. A.which B.what C.it D.they 答案 C
网址：http://m.1010jiajiao.com/timu_id_4438972[举报]
No one knows exactly when our ancestors started talking，but new evidence suggests _______might have happened a long time ago．
- A.which
- B.what
- C.it
- D.they