in a white uniform he looks more like a cook than a doctor.A. DressedB. To dressC. Dress

问题补充：

in a white uniform, he looks more like a cook than a doctor.

A. Dressed

B. To dress

C. Dressing

D. Having dressed

答案：

(答案→)A. Dressed

B. To dress

C. Dressing

D. Having dressed

解析：考察固定词组。Be dressed in穿着….dressed in对he的情况进行说明。句意：穿着白色的制服，他看上去更像厨师而不是医生。