Объяснение:
1.How long have you been learning English?
2.Did you go to the museum last week?
3.The telephone rang while I was having a shower.
4.Before I met Susan, I had never been interested in music.
5.I know that when I leave school, I will work for my family company.
6.This time next month I will be skiing in the Alps.
7.At last the librarian gave me the book which I had been waiting for during two months.
8.Our basketball team has won all its games this season.
9.I started reading this book eight weeks ago.
10.Yesterday by 8 o'clock he had finished all his homework.