let's have a pinic next Sunday.保持原意
问题描述：
let's have a pinic next Sunday.保持原意
—— ——have a picnic next sunday?
—— ——have a picnic next sunday?
—— —— ——have a picnic next sunday?
—— —— ——a picnic next sunday?
答
Shall we
Why not
Why don't we
What about having