cheap(反义词)expensive
buy(反义词)sell
ask(反义词)answer
before(反义词)after
hard(反义词)easy
buy(第三人称单数)buys
kilo(复数)kilos
shop(现在分词)shopping
half(复数)halves
close(形容词) closed
如下:cheap(反义词) dear
buy(反义词)sell
ask(反义词) answer
before(反义词)after
hard(反义词)easy
buy(第三人称单数) buys
kilo(复数)kilos
shop(现在分词)shopping
half(复数)halves
close(形容词)closed
ask的反义词是answer.before--after.shop--shopping.close--close
cheap-expensive
buy-sell
ask-answer
before-after
hard-easy
buy-buys
kilo-kilos
shop-shopping
half-halves
close-closed
expensive
sell
answer
after
easy
buys
kilos
shopping
halves
close