A:I called you yesterday. You didn't answer it. B:Oh, sorry. I_ in the bathroom at that time.
A：was taking a shower
B：took a shower
C：take a shower
从儒学自身发展来看，理学作为一种哲学思潮或者儒学复兴运动，它所强调的义理之学，是对于汉唐儒学的一种反动。理学的“反动”表现为（ ）
用每个字组两个词。
洁____、____
欢____、____
曲____、____
旗____、____
