It’s the same thing the word doesn’t change
According to linguist Corder, the following are the steps in any typical EA research:
collecting samples of learner language.
identifying the errors.
describing the errors.
explaining the errors.
evaluating/correcting the errors.
1. C
2. A
3. C
4. (I can’t see the last two options, but the answer is “agencia de viajes”)
The answer is “Comisteis“ because “comer” mean eat “comisteis” is used if your talking to a friend or a siblings but which you use “tú” if your talking to them. If you are talking to an adult you use “usted”.