28. ¿Vas a estudiar ahora para la clase de español o para ____ de ciencias?

a. uno
b. el
c. la
d. una
C? or B..

29. Me duele la cabeza. Creo que ______.
a. necesitamos otro dentista
b. debo quedarme en la cama
c. busco otro médico
d. me siento mejor
B?

31. Roberto _________. Piensa llamar a la dentista.
a. le duele la boca
b. tiene dolor de garganta
c. tiene dolor de muelas
d. ya no tiene dolor
C? Or it could be A

32. "¿________ nadas en la mar?"
"Hace dos meses."
a. Cuánto tiempo hace
b. Cuánto tiempo hace que
c. Hace un mes
d. A qué hora
A?

33. Hace tres horas _______ el piano. Me duelen mucho los dedos.
a. que toco
b. yo toco
c. qué toco
d. me toca
A?

Thanks
-MC

I'm sure this was done earlier:

28. c la (la clase)

31. c because A would require A Roberto le duele

32. b (Just memorize ¿Cuánto tiempo hace QUE)

Sra

28. The answer is "b. el". To determine the correct answer, you need to understand the context of the sentence. The sentence is asking if you are going to study now for the Spanish class or for "___" of sciences. In Spanish, "class" is usually translated as "clase" and "sciences" is usually translated as "ciencias". Since "clase" is a feminine noun, the correct determiner to use is "la", making the correct answer "c. la".

29. The answer is "b. debo quedarme en la cama". To determine the correct answer, you need to consider the situation described in the sentence. The person is saying that their head hurts, and they believe they need to do something about it. The correct option that expresses their belief about what they should do is "b. debo quedarme en la cama", which means "I should stay in bed".

31. The answer is "c. tiene dolor de muelas". To determine the correct answer, you need to understand the context of the sentence. The sentence is saying that Roberto is experiencing pain and is thinking about calling the dentist. The correct option that describes Roberto's condition is "c. tiene dolor de muelas", which means "he has a toothache".

32. The answer is "b. Cuánto tiempo hace que". To determine the correct answer, you need to analyze the question and think about the expected response. The question is asking "How long ago did you swim in the sea?" The correct option to start the response is "b. Cuánto tiempo hace que", which means "How long ago". The complete answer would be something like "Hace dos meses", which means "Two months ago".

33. The answer is "a. que toco". To determine the correct answer, you need to understand the time frame and the subject of the sentence. The sentence is saying that three hours ago, something happened related to playing the piano. The correct option to describe that action is "a. que toco", which means "that I play". The sentence is incomplete, but the correct option sets up the structure for a more complete sentence like "Hace tres horas que toco el piano" (I've been playing the piano for three hours).