You had better not keep the window open , ____ ? 
#89743
A
will you
B
did you
C
had you
D
would you
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If she ________ medicine earlier, she _______ ill now.
#87783
A
takes; won’t be
B
took; wouldn’t be
C
had taken; wouldn’t have been
D
had taken; wouldn’t be
 —Why aren’t they here yet?—They_____ the bus.
#89522
A
can have missed
B
must be late for
C
may have missed
D
might be late for