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Question

Dentists advise us to brush our teeth ______ times a day.
  1. 2

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Solution

The correct option is A 2
Brushing twice daily is highly advisory.
We should brush our teeth after waking up and before going to bed.
Sleeping without brushing may lead to germ buildup in our mouth easily. This is because the food particles may get stuck in our mouth for a long time. These germs cause bad breath and even cavities.
So, we should brush our teeth two times a day.

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