填空题

填空题 Sales fluctuated dramatically in 1998, whereas 1999 saw a steady decline in sales.

填空题 Sales rose steadily throughout the two-year period, but the increase was more dramatic in 1999.

填空题 Although sales in 1999 reached a peak, this wan the worst period for sales in 1999.

填空题 Sales remained steady for most of the two-year period despite a sudden fall at the end of 1998.

填空题 Sales started slowly in 1999, before recovering in the third quarter, in contrast to the previous year when sales declined steadily.