Basedon1c, ex.4
Choosethecorrectoption

1. A: Howlong[did Patrick work|has Patrick been working]there?
   B: He[has been|had been]atthatcompanyforfiveyears.
2. A: [Has she studied|Has she been studying]allday?
   B: Yes, she[sits|is sitting]examstomorrow.
3. A: [Does he know|Is he knowing]howtoparaglide?
   B: No, buthe[learns|is learning]to.
4. A: What[have you done|have you been doing]allsummersinceyougothere?
   B: I[have swimmed|have been swimming]and[cycled|cycling]mostly.
5. A: [Have you played|Have you been playing]thiscomputergamebefore?
   B: Yes, I[have played|have been playing]iteverydayforthepastweek.