Those who are not admitted to university, ________, may attend some other courses or classes for adult higher education.
#80413
A
though important
B
if possible
C
unless necessary
D
if ever
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Only when the fire was under control       to return to their homes.
#82459
A
the residents would be permitted   
B
had the residents been permitted
C
would the residents be permitted
D
the residents had been permitted
 There are some health problems that, when ______ in time, can become bigger ones later on.
#80687
A
not treated
B
not being treated
C
not to be treated
D
not having been treated
Only when _________ possible to settle the problem. 
#82886
A
does the chief editor come will it be
B
the chief editor comes will it be
C
does the chief editor come it will be
D
the chief editor comes it will be