I left my handbag on the train, but luckily someone gave it to a railway official.-How unbelievable to get it back! I mean, someone________ it.[ ]

The following ____ some otherexamples.

___was known to all that William had broken his promise ____he would give them a rise [ ]

It’s extremely dangerous for the drivers to _____ speed as the traffic lights are changing.

对下列划横线词的解释有误的一项是（　　）