527.Kate ______ on her new novel,which is supposed to come out next month.
A.has been working
B.had worked
C.will be working
D.was working
528.Profits in his company went up by 25% last year,and ______ so far this year though the financial situation is bad.
A.haven't decreased
B.didn;t decrease
C.haven't been decreased
D.weren't decreased
527.答案是A;根据下文暗示，一直在写，还没完成，故用现在完成进行时。
528.答案是A;so far与现在完成时连用，此处go up和decrease均作不及物动词使用，前后对应，故不选C。
