the house is empty memories flood my mind of a time when it was filled with life.A. Sinc

问题补充：

the house is empty, memories flood my mind of a time when it was filled with life.

A. Since

B. Unless

C. As if

D. Even though

答案：

A. Since

B. Unless

C. As if

(答案→)D. Even though

解析：考查连词：A. Since自从，B. Unless除非，C. As if好像，D. Even though即使，句意是：即使房子是空的，我的脑海里充满的一段时光的记忆，那是生活很丰富。选D。