I'm sitting in front on Tom. （对Tom 提问）

I'm sitting in front on Tom. （对Tom 提问） I'm in front of Tom(提问) On a bus,I like sitting ____itAin the front of B in front of Cbehind Don the back I'm sitting 一到初中的语法题,I ‘ve been sitting in front of the computer for an hour.I ‘ve been sitting能不能改成I have sit i'm sitting by one in the kitchen ..by one do you like __ __ the classroom A.to sit ; in front B.sit; in front C.sitting ; in front D.sitting ; in the front of i'm siting in front of the classroom改错 I'm s___out when Ispeak in front of people I’m just an old man,sitting in a chair.sitting in a chair在这句话中是什麽,作用为? i am sitting ( ) the bus a man is standing() me填啥原因Ain front of ,infront ofB in the front of,in the front of C in front of in the front ofD in the front of ,infront 语法点说清! I’m only interested in sitting in a boat and doing nothing at all!翻译 I don't like the boy,he is sitting in front of me同义句I don' like the boy ____ ____ in front of me,中间是有两个空的 -Nancy sat in the front seat on the left side of the room.-Oh?I thought she ____ in the back.A sat B had sat C is sitting D has sitting Before 和 In front of 在表示空间上的“前面”时有区别吗?I am sitting before the screen.He is lying before me ,这些都用in front of代替可以吗?不论可不可以,有什么区别? “Betty sat in the front seat of the classroo“Betty sat in the front seat of the classroom.”I thought she ______in the back.A.had sat B.sat C.has sat D.is sitting I'm a little nervous when I sit in front of the m___ to speak. I'm only interested in sitting in a boat and doing nothing at all.请问在为什么要用sitting和doing,而不是sit和do?