2 вариант срочно!!!!

1.It has been snowing since 10 o'clock 2.I have lived in London since 1995 3.Christie and Polly were singing in the hall at 8 o'clock yesterday 4.He was having dinner when his parents came in. 5.Tomas has just cooked breakfast for his little sister 6.My dad has been repairing his car for 2 hours already