Fill in the blank with the most appropriate word.
Can you _____ the time of the next train to London?
O.K. I'll phone the station.
Option B is the correct answer here as ‘find out’ is the phrasal verb used to indicate the activity of finding something. As this sentence is talking about finding the time of the moment, ‘find out’ is the correct option here. ‘Clear up’, ‘put away’ and ‘put out’ cannot be used here as they would render the sentence meaningless.