I saw Mr Li __（go) into the school library just now

I saw Mr Li __（go) into the school library just now i saw mr wang___ into the library just now a.went b.goes c.g I saw Mr.Wang_____into the library just now A.went B.goes C. I saw Mr Green ______（walk) into the office just now,应该填什么? I___(see)Mr wang go to the library just now. I saw our math teacher go into the office just now.{改为被动语态} I saw my teacher go into the classroom just now.(改为被动语态) I saw him go into the classroom just now .为什么SAW后的动词不是ING形式呢 I(n )Tom get into the library just now. I saw a man ( ) into the room just now I ----(see) Li Lei -----(go) out just now.答案是saw,go,为什么不是 sa I saw her __ into the library when I was walking past