pens are there on the desk?Eleven.A. How manyB. How oldC. HowD. where

问题补充：

--- pens are there on the desk?

--- Eleven.

A. How many

B. How old

C. How

D. where

答案：

(答案→)A. How many

B. How old

C. How

D. where

解析：

试题分析:根据答语eleven可知此句询问的数量，因pen是可数名词故用how many来提问，故选A。