Part Ⅱ Structure Directions:This part is to test your ability to construct grammatically correct sentences. It consists of 2 sections. Section A Directions:In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A, B, C and D. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.
Not until the bell had rung （） the classroom in a hurry.
A．he came into B．did he come into C．he has come into D．has he come into