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

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