What is your brother doing?He is writting ___.

题目

What is your brother doing?He is writting ___.
A by a pencil
B with pen
C in a paper
D in a book

答案

B 以钢笔书写,不用冠词.
例如：write in/with pencil以铅笔书写.
老师祝你学习进步!
望采纳,多谢!^_^