---Yao Ming got his left ankle injured and has not played since.---When was _______?
问题描述：
---Yao Ming got his left ankle injured and has not played since.---When was _______?
---Yao Ming got his left ankle injured and has not played since.
---When was _______?
---_____ was on Nov.10th when Houston Rockets beat Washington Wizards.
A.that; It B.it; It C.this; It D.it; That
第一空为什么不可以用“it”指代省略内容?一定要用“that”吗?
答
本题选A.这里是省略：when was that Yao Ming got his left ankle injured and has not played since happened.that引导表语从句不做成分.只起引导作用.后一个it是指时间.