问题
选择题
--- I’m sure Andrew will win the first prize in the final.
--- I think so. He _____ for it for months.
A．is preparing
B．was preparing
C．had been preparing
D．has been preparing
答案
答案：D
考查时态。根据语境可知他为比赛准备了几个月了，说明从过去一直准备到现在，故用现在完成进行时态，故选D。