Pon las siguientes frases en forma negativa del verbo ‘to be’ en forma abreviada.
1) I am a professor.
I a professor.
2) They are taxi drivers.
They taxi drivers.
3) Kathy is a nurse.
Kathy a nurse.
4) Jack is a mechanic.
Jack a mechanic.
5) Irene and Janet are cooks.
Irene and Janet cooks.
