The other day, my friend John drove his car down the street at _______
江苏省淮安市淮海中学2016届高三9月月考英语试题及答案
The other day, my friend John drove his car down the street at ________ I thought was a dangerous speed, ________ surprised everyone in the car.
A. which; that B. which; what C. what; which D. that; which