1 Dan and I have been playing (play) chess all afternoon, but I didn´t win (not win) a match! 2 I have known (know) Penny for years, and she’s a great friend. We met (meet) years ago at primary school. 3 I’m sorry I’m late, but the bus didn´t come (not come) on time. How long have you been sitting (you / sit) here? 4 Have a rest, Dad. You have been working (work) in the garden for hours, and you haven´t had (not have) lunch yet. 5 Have you ever visited ___ (you / ever / visit) Italy? I went (go) there for the first time last summer. 6 How long did you and Mary go out (you and Mary / go out), and when did you meet (you / meet)?

How are the two arguments made in the passages different? a. the first passage claims that pets in class will children with health problems; the second passage says pets will make some health problems worse. b. the first passage claims that students’ nervousness will decrease around pets; the second says that students’ nervousness will increase around pets. c. the first passage claims that pets will make the teacher’s work easier by keeping students busy; the second passage says pets will make the teacher’s work harder. d. the first passage claims that pets in school will be good for kids’ mental health; the second passage says pets will be bad for kids’ mental health.