Ihaveseldomseenmymother

來源：國語幫 2.99W

I have seldom seen my mother ________ pleased with my progress as she is now.

C．too D．rather

解析：句意：我很少看到媽媽像現在一樣因我的進步如此開心。 as ... as ...表示“像……一樣……”，該結構用於否定句時，第一個as可換為so，故選A。