—Are train services now back to ______after last week's snowstorm?—Yes，they are.

It is _____ that the middle-aged lady will pass the driving test.

 With April 18’s railway speedup, highway and air transport will have to compete with ______ service for passengers.

Most experts agree that washing hands regularly is a ______way to prevent the spread of many diseases.

 John is very _____---if he promises to do something he’ll do it.