CLOSEST: If you are swimming and lightning strikes, you risk serious injury or death.

CLOSEST: No effective treatment exists for this highly infectious disease

CLOSEST: Despite being a kid, Tuan always helps his mother do the chores every day.

CLOSEST: An infectious disease can be passed easily from one person to another, especially through air or water

OPPOSITE: When you walk, don't look at your feet. This will slow you down and cause back pain.

OPPOSITE: Jane found herself in conflict with her parents over her future career.

OPPOSITE: To reduce carbon emissions into the atmosphere, ways to limit the use of private cars must be found.

OPPOSITE: People who live in towns and cities live in an urban environment.

OPPOSITE: We greatly respect my teacher for all of the best things that she brought to us.