Animals
Present -> Past
Countries
Nature
Years
100
dog
100
I see a cat.
I saw a cat.
100
Canada
100
flower
100
1990
1990
200
bird
200
He plays soccer
He played soccer.
200
Australia
200
tree
200
2020
2020
300
wolf
300
He teaches English.
He taught English
300
Brazil
300
lake
300
1807
1807
400
otter
400
I drink orange juice
I drank orange juice
400
Spain
400
volcano
400
1860
1860
500
Orca/ Killer whale
500
I ride the bus and train.
I rode the bus and train.
500
South Africa
500
Earth
500
1282
1282