Ответ:

1) A: What had you done by the time you got to class today? In other words, what is one thing that you had completed before you arrived in class today?

B: Well, for one thing, I had eaten breakfast by the time I got to class.

2) A: What will you have done by the time you go to bed tonight? Name one activity that you will have completed before you go to bed tonight.

B: I will have eaten dinner by the time I go to bed tonight.

Verified answer

9. A: What had you done by the time you got to class today?

B: Well, for one thing, I had  eaten breakfast by the time I got to class today.

10. A: What will you have done by the time you go to bed tonight?

B: I will have eaten dinner by the time I go to bed tonight.