--I don't think we have met before.--Yes, once at a party, but we___________.
#4832
A
weren't introduced
B
didn't introduce
C
haven't introduced
D
were not introducing
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Although ______ for many years, the two old sisters recognized each other at once.
#5021
A
having been separated
B
being separated
C
having separated
D
had been separated
The president, as well as his bodyguards, _______ to the nuclear station(核电站), _______ there was an accident 20 minutes ago.
#4697
A
have come ; which
B
come; in which
C
has come ; where
D
came; in where
_________ the flight to New York will be delayed is _________ I’m especially worried about.
#4625
A
If; what
B
Whether; that
C
When; that
D
Whether; what
The American Foundation for the Blind has been trying to figure out how to make public libraries __________to blind readers .
#4700
A
acceptable
B
accessible
C
alternative
D
attractive