Oasis is to sand as island is to $\_\_\_\_$ .

Which one of the following options maintains a similar logical relation in the above sentence?

I am not sure if the bus that has been booked will be able to ______ all the students

Newspapers are a constant source of delight and recreation for me. The _____ trouble is that I read _______ many of them.

The passengers were angry __________ the airline staff about the delay.