Ils sont tous corect
They are all correct
Answer:
I often go skiing with my brother in the Alpes. We never get bored on holiday, it's what matters! We get up early, we go to sleep late and between that we play sports all day long. We have fun and we never stop! Therefore when i go on holidays, i bring gloves, bottles and a ski attire.
Explanation:
I agree. "Un" is used for masculine things; therefore, it has already been stated that the professor is masculine.