问题
I went to visit you yesterday evening, but you weren’t in. Where were you then–Oh, I ______ with my pet dog in the park. I _____ this dog for three days and it’s very cute.
A:was walking, have had
B:walked, bought
C:was walking, have bought
D:walked; have had.;
B:walked, bought
C:was walking, have bought
D:walked; have had.;
正确答案是：
