问题
选择题
Since we ____ for almost two weeks, I’ll need to buy a large backpack in advance to carry my supplies of food and water.
A．have walked
B．will be walking
C．have been walking
D．walked
答案
答案：B
题目分析:句意：既然我们要步行几乎两周的时间，我将需要提前买一个大的背包来装食物，水等。根据后句的时态可以判断walk是发生在将来的动作，应该用将来时，故答案选B。