—Does John serve in the army? —No, but h

问题选择题

—Does John serve in the army?

—No, but he________in the army for 8 years.

A．would serve

B．has served

C．is serving

D．served

答案

答案：C

本题时态。句意：约翰在军队服役吗？——不，但是他已经在军队服役八年了。根据下文时间状语for 8 years.，可知下文描述的动作现在已经完成，故用现在完成时态。主语he为单数第三人称，故助动词用单数，选C。原答案有误。