1) ... my mum been working at the factory since 18 years.
1. Been2. Have3. Has2)Jane ... the cycle of life for 2 hours.1. Has been teaching 2. Have been teaching3. Has been teaches3) The children ... in the park a month.1. Has been working 2. Have been working 3. Has been worked4) I ... been studying at this school for 7 years.1. Have2. Has3. Had5) ... you been reading this book since the morning?1. Had2. Has3. Have6) John has been collecting ... for 2 hours.1. Pond2. Rubbish3. Nesting boxes7) ... the boys been playing football since 6 o' clock.1. Has2. Had3. Have По номерам!!!Даю 47 бааллллоооввв