—The train is due to leave at 7：50.—________ we fail to arrive there in time?—I'm afraid you'd better go in a hurry.
#29963
A
What if
B
As if
C
Even if
D
Only if
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------Did the policeman let you in? ------No, ________ I told him who I was．
#31608
A
Unless
B
Once
C
as though
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even if
(2013·江西两所名校二模)The progress of the work will depend on what the weather conditions are and ________ modern the equipment is.
#30415
A
how
B
whether
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what
D
which
The police said they would not give up looking into other possibilities ____they find out what happened.
#32173
A
as
B
while
C
until
D
although