The past form of "IS" is:

• WAS

• WERE

• BEEN

The past form of "ARE" is:

• WAS

• WERE

• BEEN

I. CHANGE THE SENTENCE INTO PAST.

I am a great student.

• I was a great student.

• I were a great student

• I wasn't a great student.

I. CHANGE THE SENTENCE INTO PAST.

The weather is beautiful today.

• The weather was beautiful yesterday.

• The weather was beautiful last year.

• The weather were beautiful yesterday.

I. CHANGE THE SENTENCE INTO PAST.

Granma' and gandpa' are happy to see us.

• Granma' and gandpa' were happy to see us.

• Granma' and gandpa' was happy to see us.

• Granma' and gandpa' weren't happy to see us.

I. CHANGE THE SENTENCE INTO PAST.

It is my birthday this week.

• It was my birthday last week.

• It was my birthday yesteday.

• It was my birthday next week.

I. CHANGE THE SENTENCE INTO PAST.

The dog is very tired because it plays in the park all day.

• The dog was very tired because it played in the park all day.

• The dog is very tired because it played in the park all day.

• The dog was very tired because it plays in the park all day.

I. CHANGE THE SENTENCE INTO PAST.

There are many people at the party.

• There were many people at the party.

• There was many people at the party.

• Was there many people at the party.

I. CHANGE THE SENTENCE INTO PAST.

I am not at school today because I am sick.

• I wasn't at school yesterday because I was sick.

• I am not at school yesterday because I was sick.

• I wasn't at school yesterday because I am sick.

I. CHANGE THE SENTENCE INTO PAST.

It isn't a very difficult exam.

• It wasn't a very difficult exam.

• It was a very difficult exam.

• Was it a very difficult exam?