He knew that cholera would never be controlled _____ its cause was found.
#32471
A
till
B
still
C
until
D
kill
推荐题目
You can’t use my bike _____ you return it to me by the weekend.
#31644
A
if not
B
unless
C
because
D
though
(2014·河南豫北三校联考)________is well known to everyone，I should say，is that a man becomes learned by asking questions.
#30046
A
Who
B
It
C
As
D
What
News has spread ______Mr. Smith has two people over him in this department.
#32124
A
while
B
that
C
when
D
as