The population problem may be ______ one of the world today.
#61256
A
the most
B
most difficult
C
the greatest
D
more interesting
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I can hardly hear you because it’s too noisy here. Please speak _______ .                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
#61315
A
faster
B
more slowly
C
quickly
D
louder
)Beijing is one of the ______ in the world today.
#61161
A
busiest city
B
busiest cities
C
busy city
D
busy cities
English is_____ math, so we like to learn it.
#60964
A
not so difficult as
B
more difficult than
C
less easy than
D
not as easy as
Tian’anmen Square is one of ____________ squares in the world.
#60753
A
large
B
larger
C
largest
D
the largest