Mymotherwassittingbythewindow.Shewas

來源：國語幫 2.17W

My mother was sitting by the window. She was ________ tired ________ do the housework.

A. so; that B. too; to C. such; that D. enough; to

B 和兩個結構中，that後跟從句，故可排除A、C兩項；enough修飾形容詞或副詞時要後置，故不符合此處語境，可排除D項；...意為“太……而不能……”，to後跟動詞原形，故選B。