We were having a meeting _________ suddenly someone knocked at the door.
#32482
A
because
B
when
C
as
D
while
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We began to work in the fields. ____, it started to rain, so we went home.
#80465
A
But
B
However
C
While
D
Yet
It remains to be seen ________ the newly formed committee's policy can be put into practice.
#30073
A
that
B
which
C
what
D
whether
___________ you've got a chance, you might as well make full use of it.
#80325
A
Now that
B
After
C
Although
D
As soon as
With some technical problems to be solved, it may be a while the system is put into use.
#33190
A
when
B
after
C
since
D
before
(2014·辽宁五校第一联合体考试)What impresses me most is________he appears in front of others，he wears a sincere and charming smile.
#30034
A
what
B
which
C
that where
D
that whenever