Duckling
I ________ a teache
am
She ________ from Italy.
is
They ________ watching television.
are
He ________ a very tall man.
is
We ________ best friends.
are
It ________ a very difficult problem. (contraction)
I ________ feeling well today. (contraction)
I'm
The books ________ on the table. They are missing. (full form)
are
She ________ my sister; she is my cousin. (contraction)
She's
Where ________ my keys?
How old ________ your brother?
is
________ she coming to the party?
Is
What ________ your favorite subject?
is
________ you ready to go?
Are
Five hundred dollars ________ too much to pay for that phone.
is (Amounts of money as a unit are singular)
Each of the participants ________ required to sign this form.
is ("Each" is always singular)
All of the equipment ________ checked regularly.
is ("Equipment" is uncountable)
Here ________ the documents you requested.
are (Inversion with "here" + plural subject)
Bread and butter ________ what I eat for breakfast every day.
is (Bread and butter is considered a single food item here)
The number of students in our class ________ increasing.
is ("The number" is singular)
The news ________ very surprising to everyone.
is
The president, along with his advisors, ________ expected to arrive shortly.
is (The president is the main subject; "along with his advisors" is a prepositional phrase)
The results ________ to be announced tomorrow morning.
are (Future passive with "to be")
Your proposal ________ currently being reviewed by the committee.
is (Present continuous passive)
A number of students ________ waiting outside.
are ("A number of" means "several" and is plural)