Question:
Multi-choice problem: Continue writing the next sentence for the following:

How to keep a cavity from getting worse
Brush the area carefully.
Ideally, brushing your teeth will help prevent cavities altogether. However, brushing is also important to prevent cavities from getting worse.
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Answer:
Buildup of food stimulates the growth of bacteria. This will get into the cavity and make it worse.

Question:
Multi-choice problem: Continue writing the next sentence for the following:

A group of spectators standing and sitting on the grass look on from the side of the field. the game of polo
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Answer:
begins and the people on the horses begin to swing their mallet poles across the ground.

Question:
Multi-choice problem: Continue writing the next sentence for the following:

How to lift an object properly to avoid strain
Plan your move.
Make sure any obstacles are removed prior to lifting the object.
Determine if the load is too heavy to lift normally by pushing it along its resting surface to test its weight.
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Answer:
Gather items to help you in lifting should you determine the weight is too much. Ask a coworker for help, or gather other items to help you such as a pallet jack, cart, or hand truck.

Question:
Multi-choice problem: Continue writing the next sentence for the following:

How to write murder mysteries
Read as many murder mysteries as you can as it will expand your knowledge.
The more you learn about them, the better. By watching murder mysteries as well as reading them you may gather some ideas about how murders are solved.
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Answer:
Watching real life cop shows may also help. If you are serious about writing and can get the permission, it may be a good idea to shadow a detective team or at least ask them how murder investigations work.