1)change to negative and interrogative:
a)He visited Japan last year.
b)They enjoyed the party yesterday
c)I studied Science last semester
d)You planned a trip to Recife
e)She worked as a secretary in 1997
f)We washed the car last week
g)It played with a ball last night
2)change the sentences from present to past.
a)I walk in the park
b)You watch TV.
c)He dances ballet
d)she cries every day
e)It loves that house
f)We hate carrots
g)You try to sleep
h)They listen to the radio