Tom，as well as his friends， going to visit the Great Wall this winter vacation.
A. was
B. is
C. are
D. were
网友回答
A. was
(答案→)B. is
C. are
D. were
解析：句意：在这个寒假里，汤姆以及他的朋友们将要去参观长城。this winter vacation表将来的时间，所以用一般将来时，Tom是主语，第三人称单数，谓语也用单数形式is， as well as用；和；也；和……同样好。用法：该词组为连词，作“同；和；也”讲时，连接同等并列成分。连接两个主语时，谓语动词采用就远原则。He speaks Japanese as well as English and French. 他不但会说英语和法语，而且还会说日语。Lily as well as her parents is very fond of classical music. 不但莉莉的父母，而且连莉莉也非常喜欢古典音乐。 故选B。
考点: 考查be动词的用法。