History questions will be asked verbally and you have to response verbally. For English test, the office will give you a piece of paper with a sentence on it. You will read the sentence out loud. Finally, she will read you a sentence once for you to write down on the same piece of paper.
I understand your anxiety but please do relax. As I tried to describe in my interview experience, the officers at Portland office are very professional. They try to make you comfortable. It was NOT like an interogation at all.