Use present perfect continuous or past perfect continuous 1.how (read) this book? 2.my hands are dirty.i (repair) the car 3.jill (study) english for five years before she went to the usa. 4.dan (work) at the factory for 5 years. then it was closed

1how long have you been reading   2 i have been repairing 3had been studied 4 had been working

1the plane to sydney leaves at eleven o'clock.  e) timetables and programmes - pres simp 2 i have written two letters this morning. g) action which has happened within a specific time period which is not over at the moment of speaking - pres perf 3 they're going on holiday on saturday. f) actions that we have arranged to do in the near future - pres cont 4 graham has known errol for five years.   a) actions which started in the past and continue up to the present - pres perf 5 you're always leaving the door open.  d) to express criticism or annoyance - pres cont 6 we are rehearsing a new play at the moment. j) temporary actions -pres cont7 george has bought a new car. h) action which happened at an unstated time in the past - pres perf 8 lisa has been cleaning the house all morning. c) to put emphasis on the duration of an action which started in the past and continues up to the present - pres perf cont 9 look! alison has dyed her hair! b) action which has recently finished and whose result is visible in the present - pres perf 10 more and more people are recycling their rubbish. i) changing or developing situations  - pres cont