Hello, I can help you but you have to include a picture of the drawings. Those help you answer the questions (yes or no they are/did this).
Answer:
¿Cuantas sillas nosotros tenemos? Tenemos cuarenta y dos.
That should be the correct answer.
For the verb form <span>él cree, there are only two correct options: 3rd person and singular.
It is the third person and singular because él in Spanish means he in English, which is 3rd person singular.</span><span>
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