Asia has achieved more in controlling the bird flu than Europe in the past few years, _______ the number of people infected with the virus is going up sharply.
#73430
A
when
B
that
C
so that
D
where
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If we have a strong will, we can overcome any difficulty ______ it is.
#68085
A
what
B
how
C
whatever
D
however
It is not always easy for the public to see _______ benefit a new invention can be of to human life.
#68436
A
whose
B
what
C
which
D
that
