问题
选择题
---Where is mother?
---She is in the kitchen. She ___ the dinner for the party the whole afternoon.
A．is preparing
B．was preparing
C．has preparing
D．has been preparing
答案
答案：D
考查时态。根据时间状语the whole afternoon.及句意可知，她一直在准备晚饭，故用现在完成进行时，选D。