It has been many years since I was last in London_______I still remember something that happened during that visit.
#79761
A
and
B
for
C
but
D
as
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She had just finished her homework _____her mother asked her to practice playing the piano yesterday.
#32962
A
when
B
while
C
after
D
since
It remains to be seen _______the newly formed committee’s policy can be put into practice.
#31059
A
that
B
which
C
what
D
whether
The policy of the mainland is very clear and straightforward，and the key problem is_____the leaders of Taiwan will accept it.
#30628
A
that
B
how
C
why
D
whether
We must take measures to protect endangered wildlife _______ it is too late.
#80090
A
now that
B
as long as
C
unless
D
before