1.
Factories must __________ oil before it can be used as fuel.
2.
It was __________ waiting ten hours in line for the tickets.
3.
Sam hasn't been as __________ as he usually is.
4.
The government cut taxes in order to __________ spending.
6.
Many settlers became rich during the __________ of the California gold rush of the 1800s.
11.
With the __________ of computers, many tasks have been made easier.
13.
Recent polls suggest that fewer people see an advantage in moving to the city than they used to.
14.
The __________ wings of the newborn bird could not lift it off the ground.
15.
__________ architecture makes very good use of space.
17.
Throughout history __________ were created in an attempt to explain many common natural occurrences.
19.
The __________ caused major damage to both cars.
20.
The hacker attempted to __________ the computer's security system.
21.
The __________ pianist will be giving a concert this weekend.
26.
His trip was successful, __________ tiring.
30.
Is there any __________ in arriving early?
31.
Working abroad is __________ to many people.
33.
Deer are very __________ animals.
34.
Although the development of advanced methods will continue to change the face of healthcare, moral beliefs often collide with scientific advancements, slowing down the progress of some healthcare treatments.
35.
Many publishers __________ their newspapers directly to homes in their area.
