现在完成时态 练习题(3)

5. Lily and Lucy _____________(visit have visited )the museum, so they won’t visit it again tomorrow. have listened 6. I _____________(listen) to the song many times and I can sing it now. 7. Lily ____________(climb) has climbed the Great Wall. 8.She ____________(visit) America. Let her has visited introduce something about American’s life. have answered 9. We ______________(answer) all the questions.