1
2
3
4
100

I (no go)

I did't go.

100

I see.

I saw

100

liked

 (t)

100

I go to school.

I went to school.

200

We (no see) him.

We didn't see him.

200

We give.

We gave.

200

earned

d

200

Do you like the movie?

Did you like the movie?

300

There (no be) many people.

There were not many people.

300

They fly.

They flew.

300

needed

id

300

Can they play?

Could they play?

400

He (no think) that she (will be) there.

He didn't think that she would be there.

400

They spend.

They spent.

400

washed

t

400

Can they see what we are doing?

Could they see what we were doing?

500

Why (you no call) me?

Why didn't you call me?

500

You must do your homework.

You had to do your homework.

500

changed

t

500

I have to go home.

I had to go home.