4. Complete the sentences with the correct colloquial expressions. a. When I was sick, I at school. b. Paul is really happy because he did well on his exams. In fact, he . c. Ingrid has a lot of financial problems. I am afraid she has to stop studying and of university. d. As a lawyer, I have to some very complicated cases. e. My sister is good with people and she is really interested in human health problems. I think she is studying medicine. f. My dad is an expert at computers. I often his kn