单选题 There are two doors, one of which ______ to the living room and the other to the kitchen.
A. leads B. to lead
C. leading D. led

【正确答案】 A
【答案解析】[解析] 该句是非限定性定语从句。从句中主语为one of which，因此谓语动词用单数，只有A符合题意。