Helping verbs am, is are ,was, were

Front

The dog__________ barking at the cat.

Back

is

Front

You ______________ reading the book.

Back

are

Front

I ____________ kicking a ball to my sister.

Back

am

Front

Main verb:

Back

Action verb

Front

The children ____________ playing games outside.

Back

were

Front

Helping verbs precede action verbs.

Back

True

Front

He ____________ at my neighbour yesterday.

Back

was

Front

The dog__________ barking at the cat.

Back

is