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 She witnessed an accident ______ a minibus had a head-on crash with a taxi.
#30640
A
what
B
which
C
where
D
that
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All over the world the mobile phone has leaped from being an impossible luxury in the early 1980s to        most people would now call a necessity.
#33171
A
which
B
that
C
what
D
when
We were about to go out for a walk ________ it began to rain.
#33371
A
while
B
before
C
as
D
when
You needn’t take your shoes off when you enter someone’s house in Australia , _____ , of course , they’re very dirty .
#34326
A
before
B
since
C
when
D
unless
______ he had worked hard all the time, he failed the exam again. 
#31873
A
If
B
As
C
While
D
Because
—How will you deal with these papers, Ann?—I will leave them to ________ takes over the job.
#30312
A
anyone
B
someone
C
whoever
D
no matter who
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