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

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

"A common misconception among writers is that sentence structure mirrors thought; the more _________ the structure, the more complicated the ideas."

The word that best fills the blank in the above sentence is

"Since you have gone off the ________, the _________ sand is likely to damage the car."
The words that best fill the blanks in the above sentence are