Definition: in a way or at a time that is not expected Level: B2
上个月零售额意外下降。
Retail sales ___unexpectedly fell last month.
他上周意外地打电话来了。
He called in quite ___unexpectedly last week.
他在工作时意外地打电话给我，并让我立刻去他的办公室。
He called me really ___unexpectedly at work, and told me to go to his office at once.
