Nancy enjoyed herself so much she visited her friends in Sydney last year.[ ]
We are happy_______ you to the party for our friends from Beijing.
Are Mr. and Mrs. Wang living alone in the house? —-Yes, altough they have three sons, of them live with their parents.
________ he still _________ in his office? —No. He __________ back home.
They are going ______ a picnic next Sunday. [ ]