---Peter knows many people here.---A. So do IB. So am IC. Neither am ID. Neither do I

问题补充：

---Peter knows many people here.

---

A. So do I

B. So am I

C. Neither am I

D. Neither do I

答案：

(答案→)A. So do I

B. So am I

C. Neither am I

D. Neither do I

解析：句意：彼得认识这里的很多人。我也是。So do I意为我也是；Neither do I我也不是，故选A