557.Because of the economic crisis,the employment rate in this district _______ dramatically in the past year.
A.has fallen
B.had fallen
C.is falling
D.was falling
558.Do you really believe him?He is always changing his mind.
But this time,it seems that he _______ to go.
A.will decide
B.decides
C.decided
D.has decided
557.答案是A;表示过去的一年里所发生的事情，用现在完成时。
558.答案是D;根据语境，此题用完成时，强调对现在的影响。
