Помогите решить 15 под а и б.

1 was 2 worked 3 decided 4 heard 5 walked 6 listened 7 felt 8 picked up 9 called 10 hid 11 went 12 walked 13 saw 14 had 15 looked 16 whispered 17 looked 18 said 19 came 20 wanted 21 though 22 didn't want to Mary was tired вместо was unhappy She heard a loud crash вместо a loud voice She walked nervously вместо calmly Strange noises вместо strange music She felt very frightened вместо angry Five minutes later вместо ten minutes Saw a man on the floor вместо a policeman She whispered quietly вместо loudly It's my husband вместо brother.