Question

By the time he arrived in Beijing, we _______ there for two days. A．will have stayed B．stay.

By the time he arrived in Beijing, we _______ there for two days. A．will have stayed B．stay C．have been staying D．had stayed

Answer 1

D

考查时态。by the time用完成时态，根据arrive用过去时态，故用过去完成时，表动作先于发生。选D。