答案选B.go let sb. do sth 让某人做某事,这是固定用法,let's 后要接动词原形
let is( )to the play ground of our school 你句子写错了,应该是Let's ( )to the play ground of our school let's = let us 后面加动词原形,let's do sth让我们做某事吧,固定用法所以空格中填写go,选b
不应该是Let us …吗?应该选B,
B,let's do sth.