i often go to the play ground

Question

we often go to_play ground to play_football in_afternoon.
a\a:the:the
b\the:/:the
c\/:/:an
d\the;the;an

Answer 1

b因为playground 是专有名词加the ,而运动名词前不加冠词,除了有些乐器,如play the piano 下午好要加the