By the time you arrive in London,we______in Europe for two weeks.
A.shall stay
B.will have stayed
C.have stayed
D.have been staying
出自:大学英语1

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块