You will be late_______you leave immediately. 
#72164
A
until
B
if
C
or
D
unless
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_________ your composition carefully, some spelling mistakes can be avoided. 
#68935
A
Having checked
B
Check
C
If you check
D
To check
         ,I have to put it away and focus my attention on study this week.
#68208
A
However the story is amusing
B
No matter amusing the story is
C
Whatever the amusing story is
D
No matter how amusing the story is