Billy loved singing, because it let him do what?
Options:
- sore throats
- ichiness
- being heard
- change in mood
- hoarse voice
Let's do it gradually: Singers are heard by other people. The one who likes others to hear him, loves singing.... So the answer is being heard.

Little cameras in the car made doing what easier?
Options:
- technical difficulties
- heat up
- carpooler
- set off
- back up
Let's do it gradually: Cameras can be used for back up. Back up is needed in a car. Back up is made easier by cameras.... So the answer is back up.

Where does dust usually end up in the corner?
Options:
- windowsill
- carpet
- frogs
- ground
- corner

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's do it gradually: Generally corners of the ground have dust. Ground Corners are difficult to clean.... So the answer is ground.