Is Are or
We use the word  is  when we are talking about  1  object or person.
We use the word  are  when we are talking about  many  objects or persons.
The lady _________ reading a book. is
My favourite food _________ spaghetti is
The children _________ at school. are
The weather _________ sunny today. is
Anne’s new coat _________ beautiful. is
The boys _________ playing happily in the playground. are

Is or are?