Lines

Your lines are really good. Nothing to point out in them in particular.

Ellipses

Ellipses are good, there is few things I would like to talk about though. You seem to miss the amount of loops you make, one is too little, two is perfect, three is undesired but can happen, four is overkill. You seem to mostly make two loops, but you happen to make single loops, three loops or even four loops ocasionally. You need to remember to strike for making two loops, it is important habit to have for later lessons.

Perspective

Perspective is good, tho I have few objections to rotated boxes. First, you forgot to add hatching on the inside sides of boxes in box sphere, it is part of this exercise. Second, you made the box sphere too small and the whole drawing look small because of it, remember to use the whole page for every DaB exercise, pratice in big scale has huge impact on amount you learn, you can see your mistakes more clearly, you make more moves with your shoulder and you pratice drawing in big scale so small scale will be no problem.

I would advise making a hatching in rotatet boxes exercise, but it is up to you.

Overall great job, proud of you. You can go to 250 box challange, just rember about what I talked above.