问题补充：
15．－Tom, youve got an A in the final English exam. Congratulations!
－Thanks. But I never thought the result would come out so fast. The paperswhen I left the teachers office just now.
A. were marking
B. were marked
C. were being marked
D. had been marked
答案：
A. were marking
B. were marked
(答案→)C. were being marked
D. had been marked
解析：可联系答.案.网客服索取。
