Come To Help Me!When Mrs.Richards went towards him,he fled ,slamming the door behind him(同义句转换)On seeing Mrs.Richards_______ towards him,he fled.A.to walkB.having walkedC.walkD.walkedKey:cPlease explain it clearly to me.Why not choose

问题描述:

Come To Help Me!
When Mrs.Richards went towards him,he fled ,slamming the door behind him(同义句转换)
On seeing Mrs.Richards_______ towards him,he fled.
A.to walk
B.having walked
C.walk
D.walked
Key:c
Please explain it clearly to me.
Why not choose

see somebody doing something,表示看到某人正在做某事
see somebody do something,表示看到某人过去做了某事
不存在其它句型