The are not holding a Canadian flag, they are holding an Australian flag.
She is not feeling well, she has a headache.
She is not going to school today, she is having a fever.
PRESENT CONTINUOUS QUESTIONS
Is she coughing?
Yes she is coughing.
Is he clicking on the mouse?
Yes, he is clicking on the mouse.
What are they doing?
They are running.
Is she talking on the phone? No, she is typing on her computer.
SOME VERBS CANNOT BE USED IN PRESENT CONTINUOUS FORM
Some verbs cannot be used in present continuous form when they are used to describe a thought, an opinion, a desire, they are called “stative verbs”. For example: love, want, like.
I want an orange juice (You cannot say “I’m wanting an orange juice”)
The love Australia (You cannot say “They are loving Australia)
He likes his job (You cannot say “He is liking his job)