Make the positive or negative past perfect ) I am afraid they couldn’t go into the concert because they (leave) their tickets at home.
6) Kate said that she (not/visit) the USA before.
7) Tom and Jack (not/meet) before the party.
8) My parents (not/have) supper when I arrived.
9) My granny (not/use) a computer before, so I showed her how to use it.
10) My sister(not/study) for the test, so she was very upset