Jack became seriously ill after ________ in polluted air for many years.
#89778
A
breathed 
B
breath 
C
breathing 
D
to breathe
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__________ with such great difficulty, Jack felt at a loss__________.
#97392
A
facing; what to say
B
Faced; what to say
C
Having faced; how to tell
D
Being faced ; how to speak
Jack, who pretended       , heard, however, every word that was said.
#93017
A
not listening
B
not to be listened
C
not to be listening
D
not having listened
      to take my English textbook, I had to borrow one from a schoolmate.
#94330
A
Forget
B
To have forgotten
C
Forgotten
D
Having forgotten
Few people will admit to ________ others.
#94578
A
have prejudice against
B
be prejudiced against
C
having prejudiced against
D
being prejudiced against
 ____ by high mountains, the city is infamous for air pollution. 
#90478
A
Surrounding
B
To be surrounded
C
Surrounded
D
Having surrounded