I had Helens brother the windows but Helen had them instead.A. to clean； cleanedB. cl

问题补充：

I had Helens brother the windows, but Helen had them instead.

A. to clean； cleaned

B. cleaned； cleaned

C. cleaning； cleaned

D. clean； cleaned

答案：

A. to clean； cleaned

B. cleaned； cleaned

C. cleaning； cleaned

(答案→)D. clean； cleaned

解析：have sb. do表示“让某人做某事”；have sth. done表示“让……被……”。