1. Correct response:
cinco
Armando enrolls in five courses:
- Antropología means Anthropology
- Filosofía corresponds to Philosophy
- Italiano translates as Italian
- Cálculo stands for Calculus
- Japonés means Japanese
Thus, the phrase Armando toma cinco clases en la universidad means Armando takes five classes at university. Note that this sentence is in simple present, with toma being the third person singular of the verb tomar.
2. Correct response:
ciencias
Julia enrolls in four subjects:
- Astronomía means Astronomy
- Italiano translates as Italian
- Geología means Geology
- Cálculo stands for Calculus
Therefore, Julia toma dos clases de ciencias means Julia takes two science classes, which are Astronomy and Geology.
3. Correct response:
japonés
From the subjects Armando takes, two are language courses: Italiano and Japonés, comprising half of his classes. So, Armando toma italiano y japonés means Armando studies Italian and Japanese. This phrase is likewise in the simple present, third person singular.
4. Correct response:
italiano
By comparing the courses Armando and Julia take, the common subjects are Italiano and Cálculo. Since italiano is among the options, the correct answer is italiano. Hence, Armando y Julia estudian italiano los martes y jueves means Armando and Julia study Italian on Tuesdays and Thursdays.