You promised me to go to the zoo on Sunday. You must keep , Mom.
A. a word
B. your word
C. your words
D. the words
网友回答
A. a word
(答案→)B. your word
C. your words
D. the words
解析：句意：妈妈，你答应我在星期天去公园，你必须遵守诺言。promise sb to do 答应某人做某事；这里是固定短语keep one’s word遵守诺言。根据句意故选B。