He devoted all his life to ________ those who are suffering from cancer.
Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.
Written in a hurry, __________________ .
Is it the country ________ you studied ________ you are going to visit next week?
Why do you always drive to work _______ you could easily take the bus?
Most people are in favor of the _______ against smoking in public places.