Look at the paired sentences below. match each one with situation a) or b). 1 inflation has fallen by 1 %. 2 inflation fell by 1%. a) two years ago it was 4%. last year it was 3%. b) last month it was 4%. this month it is 3%. 3 i think i’ve lost the file. 4 sorry, i lost the file. a) i can’t find the file. i wonder where i put it. b) the file has gone and i’ll never find it. 5 has jane called this morning? 6 did jane call morning? a) jane promised to call this morning. it’s 11 am. b) jane promised to call this morning. it’s 2 pm. 7 sales improved. 8 sales have improved. a) last year sales were poor. this year they are better. b) sales were poor initially. a year later they were better. 9 how long have you worked here? 10 when did you start working here? a) in 1999. b) since 1999.