раскройте скобки.
1) My mother (cook) ........ dinner since 10 a.m.
2) My granny (knit) ......... a sweater for my sister sine September.
3) I (read) ........ this book for a week already.
4) We (be) ......... friends for many years.
5) They (build) ............. the house sinse 1995.
6) My parents (work) ........ in the garden for 4 hours.