Dr. Bell gave (A) some lectures, visited (B) the Great Wall and going (C) shopping downtown in Beijing(D).
C
【译文】贝尔博士在北京发表了演讲、参观了长城、在市中心购物。 本题考查并列谓语。该句是个由and引导的并列句，动词时态应保持一致，前面两个动词都是过去时，故应将going换成went。