关于鳞状毛囊角化病的皮损，叙述正确的有（）。

A.好发于头皮

B.基本损害为肤色或褐色圆形鳞屑斑，境界清楚，鳞屑中心与皮肤紧贴

C.皮疹大多数融合成片

D.中心有一黑色毛囊角栓，边缘略游离，周围绕以色素减退晕

E.鳞屑自行脱落或去除后，中心黑点仍存在，数天后，鳞屑又可长出

—Why were you not at the concert?

—I________ a close game between two European football teams.

A．watched

B．had watched

C．was watching

D．have been watching