is well known Hong Kong returned to China on July 1st, 1997.A. It, thatB. As, /C. As, a

发布时间：2020-08-17 15:13:41

       is well known      Hong Kong returned to China on July 1st, 1997.
A. It, that
B. As, /
C. As, as
D. It, which

网友回答

A. It, that
B. As, /
C. As, as
D. It, which
解析：
it 为形式主语，其后的that从句为主语从句。
以上问题属网友观点，不代表本站立场，仅供参考！