— What do you think of your end-of-term examinations next week?

— I wish that I ______ better than the last school year.[ ]

A. do

B. had done

C. could do

D. would have been

女性，65岁，腹胀痛，腹泻便秘交替月余伴里急后重感，无鲜血便。体格检查：腹平软，未及包块，左锁骨上，腹股沟淋巴结未触及

病理结果提示肿瘤累及肠壁肌层但未穿透浆膜，应属Dukes（我国补充分类）（）

A.A

B.A2

C.B

D.C1

E.C2