_____ a certain doubt among the workers as to whether he could finish the task in a short time．
#34562
A
It was
B
There had
C
There existed
D
It had
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He knew that cholera would never be controlled _____ its cause was found.
#32471
A
till
B
still
C
until
D
kill
Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out all the excitement is about.
#30954
A
that
B
if
C
what
D
when
The old lady could give the child sympathy, ________ any practical help would be beyond her.
#30764
A
or
B
so
C
and
D
but
The news came _______the British Queen’s Mother celebrated her 101st birthday in good health, _____ isn’t surprising，because she lives an easy life and gets the best medical care.
#32387
A
that/which
B
which/which
C
that/that
D
when/as
It will be several years _______ life in the quake-hit area is back to normal.
#32894
A
before
B
that
C
after
D
since