– Were your parents at home last night?– No. We went to Grandma’s birthday party.A. bothB

问题补充：

– Were your parents at home last night?

– No. We went to Grandma’s birthday party.

A. both

B. none

C. neither

D. all

答案：

A. both

B. none

C. neither

(答案→)D. all

解析：both两个都；None表示三个及三个以上都没有，指人； Neither表示两者都不。All三个及三个以上都；句意：昨晚你的父母在家吗？——不，我们都去参见奶奶的生日聚会了。结合语境可知本句表示三个都，故选D。