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

Thanks
-MC

28. c

29. b
31. c
32. b
33. a

28. To determine the correct answer for this question, we need to consider the context. The sentence is asking if the person is studying now for the Spanish class or for something related to science. In both cases, we need to use the definite article "el" (the) because we are referring to specific classes. Therefore, the correct answer is B - el.

29. The sentence states that the person has a headache and believes something needs to be done about it. The correct answer in this case is B - debo quedarme en la cama (I should stay in bed).

31. The sentence indicates that Roberto is experiencing some issue and intends to call the dentist. The correct answer is C - tiene dolor de muelas (he has a toothache).

32. The question asks how long ago the person last swam in the sea, and the response indicates that it was two months ago. The correct answer is B - Cuánto tiempo hace que.

33. The sentence mentions that three hours ago the speaker played the piano, and their fingers hurt a lot. The correct answer is A - que toco (I have been playing). The verb "to play" (tocar) needs to be used in the present tense to convey the ongoing action.