Question

1. Change the following sentences into the negative:

a)Anna is writing a composition.
b)Our parents are visiting my grandmother.
c)I am thinking of buying a new car.
d)You are doing your homework.

2. Change into the interrogative:

a)I am waiting for tom.
b)You are cooking dinner.
c)My grandmother is baking a chocolate cake.
d)She is checking the grammar reference.
e)They are listening to rock music.

Answer 1

1) a) Anna is not writing a composition
b) Our parents aren't/are not visiting my grandmother
c) I am not thinking of buy a new car
d) You are not/ aren't doing your homework

2) a)Am I waiting for Tom?
b) Are you cooking the dinner?
c) Is my grandmother making(provavelmente digitado errado) a chocolate cake?
d) Is she checking the grammar reference?
e) Are they listening to rock music?

Espero ajudar...
*Nas questões negativas, nós acrescentamos o "not" depois do verbo to be "are, is, am"
*Nas questões interrogativas, nós invertemos a ordem, colocando o verbo to be "are, is, am" na frente do pronome "I, you, she, he, it, we, they" no início da frase