II/6
(1) C
(2) B
(3) C
(4) A
(5) C
(6) A
(7) B
(8) A
(9) B
(10) C

18.
1. I washed up while you were talking to Jack.
2. My friends went to see ‘Titanic’ last Monday.
3. Who killed this beautiful woman?
4. I was sleeping when my father arrived.
5. Jill was in England last Summer.
6. When I phoned Tom last night, he was having a bath.
7. They bought their new house last year.
8. When did you see Mary? Was it last week?
9. I was watching TV, when my brother found his pen.
10. Frank was listening to the radio, so he did not hear the telephone.