Question

At that time we lived in houses which ___________ old, cold and unsafe. A．are B．were C.

At that time we lived in houses which ___________ old, cold and unsafe. A．are B．were C．is D．was

Answer 1

B

根据时间状语可知用过去时态，且which指代先行词houses，为复数形式，故答案为B。