—The play is seldom put on here is it?—.Only once three weeks ago.A. No it isn’tB. Yes i

问题补充：

—The play is seldom put on here,is it?

—.Only once three weeks ago.

A. No,it isn’t

B. Yes,it is

C. Yes,it was

D. No,it is 

答案：

(答案→)A. No,it isn’t

B. Yes,it is

C. Yes,it was

D. No,it is 

解析：答语中的only once three weeks ago暗示了“这部话剧并不常在这儿上演”，这是对问句的肯定，故应用No,it isn’t（是的，不经常）.C、D两项本身结构有误。