Переделайте следующие предложения в во тельно-отрицательные и дайте краткие ответы:
. They have received the goods. (haven’t)
. He has finished his work. (hasn’t)
. They will visit us on Monday. (won’t)
. We have many customers. (don’t)
. You knew their address. (didn’t)
. You can do this work. (can’t)