I have had new neighbours for some time.
Had he been informed before he arrived?
Trzecie nie jest dokończone ale początek to coś w tym stylu- Don't complain about your life and stop (tu pewnie będzie czasownik z końcówką -ING)
Is there a computer upstairs?
Those bikes are theirs and these are ours.
This suitcase isn't light enough form me to carry.
Everybody likes holiday, don't they?
You wouldn't have to buy that if you were able to do it yourself-przypuszczeni na temat teraźniejszości lub
You wouldn't have had to buy that if you had been able to do it yourself.-gdybanie o przeszłości