There s a teacher with your parents in the teachers office.A. is talking B. talksC. to

问题补充：

There s a teacher with your parents in the teachers office.

A. is talking

B. talks

C. to talk

D. talking

答案：

A. is talking

B. talks

C. to talk

(答案→)D. talking

解析：句意：在教师办公室里面，有一个老师在和你的父母谈话。现在分词作宾语补足语表示正在进行的伴随性动作，和被修饰词是主谓关系，故选D。