He tried to deal with the ever-increasing burden of his work,but finally _____ and had to take a complete rest.
Everything was perfect for the picnic ______ the weather.
Don’t promise anything ______ you are one hundred percent sure.
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
American Indian ______ about five percent of the U.S. population.
There are plenty of jobs ______ in the western part of the country.