My father warned me ________ going to the West Coast because it was crowded with tourists.

Emails are efficient and convenient, but the best way to __________ a message is still to talk it out in person.

_____ people food, housing and jobs is what a government should first consider after a natural disaster happens. 

More and more attention has been drawn to the fact that many children are ________ in the countryside when their parents flood into the cities for jobs.

Many people are beginning to reflect on why we pay so much to study abroad and what kind of consequences it will ________.