Answer:
2- es
3- es
4- son
5- eres
6- estamos
7- está
Step-by-step explanation:
2- it's the verb SER, but in singular and third person (talking about a student)
It's a location, so it's the verb SER
3- it's the verb SER, but in singular. (Today is tuesday)
4- the verb SER, but in plural and third person (the children are..)
5- the verb SER, but in singular and second person (you are lazy..)
6- the verb ESTAR, but in singular and first person. (We are writing...)
7- the verb ESTAR, but in singular and third person (My mother is worried...)
It's a feeling, so that's why it's ESTAR.