I.  Choose the best answer.
1.  Did you say that you                      here only three days ago?
A.  were coming           B. had come                C. have come              D. come
2.  By the time, he arrived at the party, all his classmate                      .
A.  has left                   B. left                          C. was leaving             D. had left
3.  When I was a child,                      the violin.
A.  I was playing          B. I had play               C. I play                      D. I played
4.  I                      like going to pop concerts when I was a teenager.
A.  would                     B. used to                    C. must                        D. could
5.  Rick left the party early because he                      a headache.
A.  had                         B. has                          C. used to have           D. was having