问题补充：
.Not beautiful, the building is now.
A. looking, being built
B. looked, being built
C. being looked, building
D. looking, built
答案：
(答案→)A. looking, being built
B. looked, being built
C. being looked, building
D. looking, built
解析：考查非谓语动词及时态。句中look为“看起来”之意，为系动词，逻辑主语为the building，与其之间的关系为主动。根据句中时态用现在进行时的被动语态。句意：正在被建的建筑物，看起来不漂亮。
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