learn cũng là trường hợp đặc biệt nên ta cũng có thể chia là leant nè em =))

learnt/learned

3 happy => happily :v

ironing => iron

about => of

happily

to go => going

was => were

ghê vậy =))

goes

has worked

didn't watch

is coming

grew

made

gave

took 

collected

am => are

on => in

in => on

is => are

seafood delicious => delicious seafood

swim => swimming

is going => went

ko có lỗi sai

staying => stay

is => are