A when
B while
C until
D since
A that
B which
C where
D what
A use
B useful
C used
D usefully
A careless
B carefully
C carelessly
D careful
A turn out
B carry out
C carry on
D keep on
A working
B worked
C works
D work
A for
B at
C on
D in
A before
B after
C when
D until
A so sweetly
B too sweetly
C so sweet
D very sweet
A in case
B so that
C unless
D whether
A cooking
B being cooked
C to cook
D to be cooked
A beneficially
B benefit
C beneficial
D beneficiary
A don’t you
B do you
C are you
D aren’t you
A breaking into
B break into
C broke into
D to break into
A taken
B take
C taking
D to take
A acid rain
B safe water shortage
C industrial pollution
D population explosion
A acid rain
B garbage
C industrial pollution
D high cost
A It contains a rich variety of animals and plants
B It is polluted by massive volumes of industrial wastes discharged into it.
C It has 1,300 rare species that do not exist anywhere else in the world
D The government did not have the power to enforce laws and regulations
A exactly 16
B exactly 15
C nearly 16
D less than 15
A We should take action to protect our water resources.
B We should take all water resources into account
C We should limit the use of water resources
D We should encourage people to use safe water
A when
B while
C until
D since
A that
B which
C where
D what
A use
B useful
C used
D usefully
A careless
B carefully
C carelessly
D careful
A turn out
B carry out
C carry on
D keep on
A working
B worked
C works
D work
A for
B at
C on
D in
A before
B after
C when
D until
A so sweetly
B too sweetly
C so sweet
D very sweet
A in case
B so that
C unless
D whether
A cooking
B being cooked
C to cook
D to be cooked
A beneficially
B benefit
C beneficial
D beneficiary
A don’t you
B do you
C are you
D aren’t you
A breaking into
B break into
C broke into
D to break into
A taken
B take
C taking
D to take
A acid rain
B safe water shortage
C industrial pollution
D population explosion
A acid rain
B garbage
C industrial pollution
D high cost
A It contains a rich variety of animals and plants
B It is polluted by massive volumes of industrial wastes discharged into it.
C It has 1,300 rare species that do not exist anywhere else in the world
D The government did not have the power to enforce laws and regulations
A exactly 16
B exactly 15
C nearly 16
D less than 15
A We should take action to protect our water resources.
B We should take all water resources into account
C We should limit the use of water resources
D We should encourage people to use safe water
A when
B while
C until
D since
A that
B which
C where
D what
A use
B useful
C used
D usefully
A careless
B carefully
C carelessly
D careful
A turn out
B carry out
C carry on
D keep on
A working
B worked
C works
D work
A for
B at
C on
D in
A before
B after
C when
D until
A so sweetly
B too sweetly
C so sweet
D very sweet
A in case
B so that
C unless
D whether
A cooking
B being cooked
C to cook
D to be cooked
A beneficially
B benefit
C beneficial
D beneficiary
A don’t you
B do you
C are you
D aren’t you
A breaking into
B break into
C broke into
D to break into
A taken
B take
C taking
D to take
A acid rain
B safe water shortage
C industrial pollution
D population explosion
A acid rain
B garbage
C industrial pollution
D high cost
A It contains a rich variety of animals and plants
B It is polluted by massive volumes of industrial wastes discharged into it.
C It has 1,300 rare species that do not exist anywhere else in the world
D The government did not have the power to enforce laws and regulations
A exactly 16
B exactly 15
C nearly 16
D less than 15
A We should take action to protect our water resources.
B We should take all water resources into account
C We should limit the use of water resources
D We should encourage people to use safe water
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