3.1 Underline the correct words. Yesterday I phoned /I've phoned the bank about our overdraft. 2 I work/I have worked here since the end of last year. 3 I work/I have worked from home one day a week. 4 I'm enjoying the conference. I made / I have made a lot of useful contacts. 5 I saw / I've seen Hugh Hopper a few days ago - he sends his regards. 6 We went / We have been to an interesting seminar last week. 7 Today has been/was really busy - and it's only lunchtime! 8 Today has been/was really busy. It's 7 pm - I'm going home. 9 I'm sorry but Patricia left/has left the office an hour ago. 10 Patricia? No, she isn't here right now. She left/has left the office.