—Do you have to hold our English party in the classroom?—Well. I don’t know if not there.

问题补充：

—Do you have to hold our English party in the classroom?

—Well. I don’t know if not there.

A. what can we do it

B. when can we do it

C. where can we do it

D. where we can do it

答案：

A. what can we do it

B. when can we do it

C. where can we do it

(答案→)D. where we can do it

解析：英语宾语从句中一般为陈述语序。句意：你们必须在教室举行英语聚会吗？联系下文if not there.如果不在那儿。可知选D，我们不知道在哪儿举行。