11. They / live / Moscow/ before / they / move / London.

A: They had lived in Moscow before they moved to London.

B: They lived in Moscow before they had moved to London.

C: They had lived in Moscow before they had moved to London.

D: They was living in Moscow before they moved to London

12.I haven’t seen my father for one month.

A. It is one month since I last saw my father.

B. It was one month since I last saw my father.

C. It is one month since I have seen my father.

D. It is one month since I last see my father.

13. This is the first time I have gone out for a picnic.

A. I have ever gone out for a picnic.

B. I have never gone out for a picnic before.

C. I had never gone out for a picnic before.

D. I never go out for a picnic.

14. The police / arrest the man /while /he / have /dinner / restaurant.

A.The police arrested the man while he is having dinner in a restaurant.

B.The police arrested the man while he is having dinner in a restaurant.

C.The police arrest the man while he was having dinner in a restaurant.

D.The police arrested the man while he was having dinner in restaurant.

15.By the time / I/ meet you /I /work / that company / 5 years

A.By the time I had met you I had worked in that company for 5 years.

B.By the time I meet you I had worked in that company for 5 years.

C.By the time I met you I had worked in that company for 5 years.

D.By the time I met you I worked in that company for 5 years.