31, joyful
32, combination
33, musicians
34, Occasionally
35, composed
36, She locked the door in order not to be disturbed.
37, When did you start working for this company?
38, Music can be used to communicate
39, If you didn’t feed your dog so often, it would not be so fat.
40, She made a cup of coffee so as not to feel sleepy while writing her report.
41, I left Peter my phone so that he is able to contact me.
42, If the car in front hadn’t stopped so suddenly, I wouldn’t have crashed into its back.
43, We has been warned not to go out alone.
44, The robber will get away with the money unless someone calls the police.
45, The fireman rushed into the burning house so as to save the child.
46, is
47, In
48, later
49, listen
50, own