问题补充:
What difficulty I had the dirty walls! I had no choice but to have it again.
A. clean, paint
B. cleaning, painting
C. cleaned, to paint
D. cleaning, painted
答案:
A. clean, paint
B. cleaning, painting
C. cleaned, to paint
(答案→)D. cleaning, painted
解析:句意:清理这些脏墙壁多难啊!我别无选择只能再次粉刷。Have difficulty doing sth,做某事有困难;have sth,done使某物被……;宾语和宾补之间是被动关系,结合题意选D。