Let's go by underground.(完成反意疑问句) Let's go by undLet's go by underground.(完成反意疑问句)Let's go by underground ,____ ____.

Let's go by underground.(完成反意疑问句) Let's go by undLet's go by underground.(完成反意疑问句)Let's go by underground ,____ ____.
Let's go by underground.(完成反意疑问句) Let's go by und
Let's go by underground.(完成反意疑问句)
Let's go by underground ,____ ____.

Let's go by underground.(完成反意疑问句) Let's go by undLet's go by underground.(完成反意疑问句)Let's go by underground ,____ ____.
shall we