问题
Tom, you’ve got an A in the final English exam. Congratulations!—-Thanks. But I never thought the result came out so fast. The papers ______ when I left the teacher’s office just now.
A:had been marked
B:were still being marked
C:are still marking
D:had been marking
B:were still being marked
C:are still marking
D:had been marking
正确答案是：
