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1) Complete as frases com a forma do verbo to be correta, e, a seguir, relacione as respostas corretas.
a) ___________ you 15 years old? ( ) No, he isn’t. He’s my brother.
b) ___________ he your friend? ( ) No, I’m not. I’m 16 years old.
c) ___________ it a literary blog? ( ) Yes, they are.
d) ___________ they students? ( ) Yes, it is.