问题
选择题
Since mid July, many areas in Shaanxi continuous heavy rain, leading to frequent natural disasters.
A．saw
B．had seen
C．has seen
D．have seen
答案
答案：D
考查时态。Since+时间点，for+时间段都与现在完成时连用。根据Since mid July可知，应该用现在完成时，排除A、B；主语是many areas，故谓语用复数。故选D。