It does not matter that you are a slow walker _____ you never walk backwards.
#30065
A
as long as
B
as soon as
C
unless
D
until
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22．Lawrence Craven, a doctor from the USA，is the author of several published reports, one of______ introduced the idea in 1953 ______aspirin could reduce the risk of heart attacks．
#79598
A
them; when
B
which; that
C
what; that
D
which; when
．China is playing an important role in the world. That’s_______Laura has come to study Chinese.
#34794
A
because
B
why
C
how
D
that
Children of this age should be reminded of________ to do in public places.
#30654
A
what
B
whether
C
how
D
why
— Did you remember to give Jenny the money? — Yes. ________ I saw her, I’m sure.
#33695
A
As far as
B
In case
C
The instant
D
Now that