1、______be sent to work there?
A、Who do you suggest B、Who do you suggest that should
2、_____her friend was badly hurt,she burst into tears.
A、Hearing B、Having heard
3、Important____his discovery was,it was regarded as a matter of no account in his time.
A、as B、although
（不知道as在这里做什么讲）
要解题思路，说明为什么，涉及什么语法点
又及：学校给的正确答案AAA。