Last term our maths teacher set so difficult an examination problem _____ none of us worked it out.
#71998
A
that
B
as
C
so that
D
which
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In his speech, Premier Wen Jiabao points out that creativity is __it takes to keep a nation highly competitive .
#73504
A
how
B
what
C
which
D
that
6. I'll give you my friend's home address, _________ I can be reached most evenings. 7.
#74678
A
which
B
when
C
whom
D
where
---So you were in the supermarket __________ you heard a strange sound, right?---That’s true. I ran out as quickly as possible.
#41416
A
when
B
while
C
then
D
which
—Did Jack come back early last night?—Yes. It was not yet eight o' clock he arrived home
#67699
A
before
B
that
C
when
D
until