Question

---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

Answer 1

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。