问题补充：
----- You should have finished your homework, I gave your much time.
----- Sorry, but I it.
A. had forgotten
B. forgot
C. was forgotten
D. forget
答案：
A. had forgotten
(答案→)B. forgot
C. was forgotten
D. forget
解析：B考查语境下的动词时态。由should have done本该做某事可以看出动作的过去
