______ is known to the world, Mark Twain was a great American writer.
As
Once
That
It
本题考查定语从句。句意:众所周知,马克•吐温是一位伟大的美国作家。as在该句中引导非限定性定语从句,在从句中作主语。
登录 | 注册 | 回到顶部
版权所有©环球网校All Rights Reserved