My brothers love joining my dad in _______things around the house at weekends.
A.mend
B.mended
C.to mend
D.mending

My mother _______very early in the morning to prepare our breakfast.
A.cries
B.sleeps
C.gets up
D.stays up

In my free-time, I often help mom with _______the house.
A.to clean
B.clean
C.cleaning
D.cleans

I take responsibility to _______my little brothers because they are sometimes very naughty.
A.look after
B.get up
C.sit down
D.shut up

She had to work on _______last night, so she is very tired this morning.
A.the roof
B.the table
C.the bed
D.night shift

According to the passage, how does the standard of living affect global warming?
A.Higher standards of living are better for the environment
B.First world nations create less population than developing nations.
C.The use of natural resources is directly related to the standard of living.
D.High standards of living lead to increases in world population.

_________(76)
A.beneficial
B.benefit
C.benefitable
D.beneficially

_______(77)
A.product
B.producer
C.produce
D.producing

________(79)
A.governmentalism
B.governmental
C.government
D.governmentalize

The word "pace" in the passage is closest in meaning to ............
A.growth
B.speed
C.problem
D.pollution