Use the Present Perfect or Present Perfect Continuous tenses. 1. Why is she crying? – She … (hurt) her arm. 2. … they

1. Why is she crying? – She has hurt (Present Perfect) her arm. 2. Have they launched (Present Perfect) the spaceship yet? 3. The strong wind has been damaging (Present Perfect Continuous) everything around for 3 hours. 4. What is the result of the tornado? – It has done (Present Perfect) a lot of damage. 5. The scientists have been doing (Present Perfect Continuous) the exploration of the island since they discovered it. 6. They haven\'t solved (Present Perfect) that serious problem yet, have they?