<h2>
Answer:</h2>
a. Es buena idea que hagas una reservación.
<h2>
Explanation:</h2>
Option a and c are grammatically correct, but only option a is right in this context because the statement of the problem establishes that we must choose the correct answer for the question about vacations you have taken and what <em>you recommend. </em>Since you have to give a recommendation, you need to say es buena idea que hagas una reservación, because this sentence stands for the subjunctive mood, that is used to express <em>doubts, desires, unknown things, abstract things, and emotions. </em>So the key here is the word haga, which is the conjugation of the verb hacer for the second person singular (tú - informal you) in the subjunctive mood. Finally, this sentence means:
<em>It's a good idea for you to make a reservation.</em>
Answer:
Cuando nosotros ibamos de vacaciones salemos todo mal.
Give me Brianlist inswer if it helps u
Cepíllate
Oro
Pintarse
Me despierto
Rápidamente
Salón de belleza
Te duchas
Nervioso
Un secador de pelo
Boda
2. Está (a)
3. Está (d)
4. Estamos (c)
5. Son (b)
6. Estas (a)
7. Son
8. Está
9. Es
10. Están
11. Es
Didn’t do 12 through 18 because I don’t know what reflexives are by name :)
19. Vestirme
20. Afeitarse
21. Prepararse
Sorry I didn’t answer the rest but hope it helped!