Uzupełnij tekst wyrazami z ramki w odpowiedniej tak, aby powstał spójny i logiczny tekst: be frustrate ill learn treatment
1.______ a doctor is very exciting but difficult too. Doctors 2.______ patients who suffer from different 3. _____. Sometimes doctors cannot help their patients. They find it very 4._____.
1. Being
2. treat
3. illnesses
4. frustrating