Question

So far this year we ________ a fall in house prices by between 5 and 10 percent.

A．saw

B．had seen

C．have seen

D．see

Answer 1

C

试题分析：考查时态。So far到目前为止；与现在完成时连用。故C正确。句意：今年到目前为止，我们已经见证了房价下降了百分之5到百分之10.
点评：so far（到目前为止）与现在完成时连用。