The police ______ for the lost child everywhere.
#103822
A
is looking
B
has looked
C
are looking
D
are looked
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The people _____ the murderer everywhere when he suddenly _______ in the hospital.  
#102316
A
searched for; appeared
B
were searching; was appearing
C
were searching for; was appeared
D
were searching for; appeared
If nothing______, the oceans will turn into fish deserts. 
#99587
A
does
B
had been done
C
will do
D
is done
 I first met Lisa three years ago. She _____ at a shop at the time.
#104141
A
has worked  
B
was working
C
had been worked
D
had worked