Question

4. Fill in the blanks.

1. In 1870, people used_ to brush their teeth.
2.
_for toothpaste had not yet
been invented.​

Answer 1

1)datun

2) brush

Explanation:

marks it as brainliest

Answer 2

Answer:

1 Charcoal or Salt

Explanation:

Charcoal and salt are so good for teeth the kill germs and bacteria