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B.Is life getting more expensive - Yes, it is.
c. Are we using more energy - Yes,we are.
d. Are people going to more univercity -Yes, they are.
e. Is the population getting older - Yes it is.
f. Are people getting married fewer - Yes they are.
g. Are we living longer -Yes we are.

b. increase
c. is cause
d. is melting
e. are rising
f. is changing
g. having
h. getting