本月油价急剧上涨。

The price of oil has increased ___sharply this month.

在他不再定期上课后，他的考试成绩急剧下降。

His test scores dropped ___sharply after he stopped attending classes regularly.

近年来，电动汽车的销量急剧上升。

The sales of electric vehicles have risen ___sharply in recent years.