Use these verbs in their correct form to complete the phrases fly, design, care, advise, travel, research, treat, write.
1. Susan .... new medicines to cure diseases. 2. Peter .... a plane. 3. Sandra .... for people who are ill. 4. Laura .... software. 5. Chris .... novels. 6. Steve .... people about the law. 7. Mark .... in space. 8. Ben .... people who are ill.