— Hello Betty! Where are you now?— I on the Great Wall of China and talking to you.A. s

问题补充：

— Hello, Betty! Where are you now?

— I on the Great Wall of China and talking to you.

A. stand

B. am standing

Cstood

D. was standing

答案：

A. stand

(答案→)B. am standing

C. stood

D. was standing

解析：

试题分析: 句意：你好。贝蒂，你现在哪儿？我正站在中国的长城上和你讲话。 and和，连接相同成分，根据now和talking to you. 可知是现在进行时，故选B