Where your pen pals ?A. are fromB. do fromC. do comeD. is from

问题补充：

Where your pen pals ?

A. are, from

B. do, from

C. do, come

D. is , from

答案：

A. are, from

B. do, from

C. do, come

(答案→)D. is , from

解析：短语辨析。句意：你的笔友来自哪里？come from，来自，be from意思来自哪里，固定句型结构，主语你的笔友是单数第三人称，故be动词用单数。结合语境可知选D。