Some scientists think there are _______ 2，000 million flashes of lightning per year.
#26291
A
in short
B
on average
C
as usual
D
in total
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They need twenty more workers ______ their group to do the job.
#28328
A
except
B
but
C
beside
D
besides
They also agree that it is the burning of more and more fossil fuels that has resulted ____ this increase in carbon dioxide.
#25796
A
from
B
of
C
in
D
to
Neither of them knows the difference ________ the two and neither can we tell one ________the other.
#26336
A
between; between
B
among; from
C
among; between
D
between; from