Though he had no pen to write ( ),he wrote it down ( )pencil.

问题描述:

Though he had no pen to write ( ),he wrote it down ( )pencil.

with 用
in 用抽象的工具
如果是a pencil,那就用with,具体工具.
很高兴为你解答!
老师祝你学习进步!
望采纳,多谢你的问题!^_^