:
A.
1) d
2) a
3) e
4) f
5) c
6) b
B.
1) False
2) True
3) False
4) True
5) True
6) False
C.
1) You should stand up and walk around.
2) Because having good relationships with other people makes us happy.
3) Difficult jobs like calling to make a dentist appointment.
4) Because you will feel happy, if you look forward to doing something fun in the future.
5) You will feel better.
6) You feel happier when you smile.
D.
1) exercise
2) relationships
3) touch
4) cross
5) forward