Help the stressed student finish their email to the professor about a disastrous group project by choosing the correct word for each blank.

I am worried because some of my group members are ignoring my messages, while the rest are trying their best.

Unfortunately, one student has done absolutely no work at all.

I have finished most of the presentation slides myself, leaving just the final conclusion for tomorrow.

I am worried because some of my group members are ignoring my messages...

Because "the rest are trying their best," we know the group is divided. "Some" refers to a part of the group.

...one student has done absolutely no work at all.

The phrase "at all" is often used with negative words like "no" to emphasize that zero work was completed.

I have finished most of the presentation slides myself...

Since only the "final conclusion" is left, the student has finished nearly all—but not 100%—of the slides. "Most" is the best fit.