11) A
12) C
13) C
14) A
15) B
16)Who discovered penicilin? - f
17)How many operas did Vivaldi write? -d
18)Did your friend ever marry? -c
19)Was John satisfied with his job? -a
20)How did Diana die? -e
21) did you bought
22)wrote
23) didn’t married
24) received
25)didn’t appeared
26)Did Colombus discovered
27)Did you enjoyed