Answer:
This is written in a passive voice and needs to be rewritten in an active voice and reduce length. After 12 weeks had passed, each mouse was randomly placed in one of two treatment groups; in all cases, a die was rolled (was rolled is a passive voice right now) by an experimenter for each mouse, and if it landed on an even number, the mouse was placed in the group that received a pill.
Answer:
Automatically save a backup copy of your files. First and foremost, OneDrive helps you sleep better at night because you don't have to worry about losing all your documents due to a hard disk failure or computer theft (which unfortunately happens when you least expect it).
Answer:
Yet
Explanation:
Yet is the right answer that you're looking for :)
The events eventually lead to the Resolution or Conclusion.