Question

______, a small advertisement held my attention, which read

Answer 1

B

这题考查非谓语动词做状语的用法，非谓语动词做状语时，动词的逻辑主语必须和主句的主语一致，而这道题主句的主语是a small advertisement，而look through的逻辑主语应该是人，所以不能用非谓语动词，而应该选时间状语从句。故选B。