The answer is:
Worked hard to take care of their patients.
C. The de acidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper, and minimizing the alkaline reserve.
My fate is to die in a barrel !
or
the fate of this man is uncertain be aware …
D should be correct answer,mice is a group so you don't need to add an 's:)
God Bless:)