5) corrija qualquer possível erro que possa aparecer nas frases:
1. i is doing a very good job in the company.
2. what is you doing here?
3. ketty and kelly are sisters.
4. the cat are black and white.
5. i don't know where we is.​

1. I am doing a very good job in the company.

2. What are you doing here?

3. Ketty and Kelly are sisters.

4. The cat is black and white.

5. I don't know where we are.. ​

1. I Am doing a very good job in the Company.

(Trocar "Is" por "Am")

2. What are you doing here? (Trocar "Is" por "Are")

3. Ketty and Kelly are sisters. (Correto)

4. The cat is black and White. (Trocar "Are" por "Is")

5. I don't know where we us. (Correto)

Explicação:

Para corrigir as frases basta apenas saber como conjugar cada pronome pessoal no Verbo To Be veja a seguir

I --- Am

You --- Are

He --- Is

She --- Is

It --- Is

We --- Are

You --- Are

They --- Are

Espero ter ajudado ;)