We do not own the building. it would be impossible for us to make any changes to it.A. Thu

问题补充：

We do not own the building. it would be impossible for us to make any changes to it.

A. Thus

B. Still

C. Yet

D. However

答案：

(答案→)A. Thus

B. Still

C. Yet

D. However

解析：考查副词：A. Thus因此B. Still仍然C. Yet然而D. However然而，句意：这个房子不是我们自己的，因此我们不可能对它做出改变。选A。