问题
选择题
Half the world’s population ______ water shortages within 15 years according to the World Bank, just one of many recent alarming reports on the world’s fresh water supply.
A．are suffering
B．have been suffered
C．will suffer
D．were suffered
答案
答案：C
题目分析：根据时间状语within 15 years，故用一般将来时。
点评：通过时间状语，上下句意思和具体语境来确定时态。