问题

We could have asked Mr. Zhang for help. Heis caring and considerate.—– I_______that. A long time _______.
A:forgot; hadbeen wasted
B:forget; wasted
C:haveforgotten; wastes
D:forgot; was wasted
B:forget; wasted
C:haveforgotten; wastes
D:forgot; was wasted
正确答案是: