I use a pen to write.还是I use a pen to write with.为什么?

I use a pen to write.还是I use a pen to write with.为什么? I use the pen ________a letter?填什么?to write Can I write a letter --------(use) this pen? i have a pen to write还是/write with I need a pen to write 和 I need a pen to write with那句对?为什麽? I have no pen ______ .May I borrow yours?A.to write B.to write with 为什么这个句子后的动词不用加介词The pen ia a tool which people use to write那为什么这个又要加I write with pen I have no pen to write withmy question is whether i can use in to replace with.why. I often write to my pen pal with a _____ A:pen B:from C:how I‘d like a pen to write 还是to write with 为什么RT I write a letter to my pen friend every week.(同义句)I___ ___my pen friend use a computer to write I write ___ a pen .应填什么?（A.in B.with C.by D.use） I wanted to write a letter just now.So I wanted a pen.(改为同义句) I wanted to write a letter just now.So I wanted a pen.(改为同义句) Neiter.I use a pen.中文意思 give me a pen to write I need a pen to write 和 I need a pen to write with那句对? 为什麽?说说原因