In the sentence "The bird is flying in the sky," what is the process?

In the sentence "The dog is barking loudly outside," what is the circumstance?

In the sentence "Sara is reading a book on the sofa," who is the participant?

In the sentence "The cat is sleeping on the mat," what is the process?

In the sentence "The children are playing in the garden," what is the circumstance?

In the sentence "We go to the beach every summer," what is the circumstance?

In the sentence "The children are playing quietly," what is the circumstance?

In the sentence "The teacher is explaining the lesson to the class," what is the process?

In the sentence "The car is driving quickly down the street," what is the process?

In the sentence "The children played after school," what is the circumstance?

In the sentence "Tom is sitting at the desk," who is the participant?

In the sentence "The children are laughing happily," what is the circumstance?

In the sentence "The dog is running very fast," what is the process?

In the sentence "The sun is shining brightly," what is the circumstance?

In the sentence "Mary is writing a letter," WHO and WHAT are the participants?

In the sentence "We will go to the park tomorrow," what ARE the circumstances?