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do last holiday ?
I climbed a mountain.
Then,it was ... But now, it is ...
Then,it could ... But now, it can ...
Animals' changes
Animals' Changes（变化）
six years ago
twenty years ago
twenty years ago
thirty years ago
Mike
Mrs Brown
Mr Brown
Mike's grandpa
The Browns' changes
Mike
can do many things
six years ago
couldn’t______
write
could________
read & draw
Mr Brown
writes emails
twenty years ago
used the telephone
wrote letters
has a mobile
phone
Grandpa