Washington (to be) in America.
is
They (not to be) thirsty, they (to be) hungry.
are not/aren't....are
Amy (to be) 5 years old.
Amy is 5 years old.
It (to be) cold today.
is
Mr and Mrs Jones (to be) teachers.
are
An elephant (to be) a big animal.
is
Mice (not to be) big animals.
are not/aren't
Your classmates (to be) friendly.
Your classmates are friendly.
She (to be) very tired.
is
Europe and Africa (to be) continents.
are
He (not to be) married.
He isn't married.
This exercise (not to be) difficult.
is not/isn't
I (not to be) a teacher. I (to be) a student.
am not/ 'm not....am
Dogs (to be) man's best friend.
are
Hockey (not to be) a slow game. It (to be) fast.
is not/isn't....is
Lemons (not to be) sweet.
Lemons aren't sweet.
