She’s already two hours late. What ______ to her?
#104859
A
can have happened
B
may have happened
C
should have happened
D
must happen
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I ________ your last point — could you say it again? 
#104730
A
didn’t quite catch
B
don’t quite catch
C
hadn’t quite catch
D
can’t quite catch
—I have brought you the book you need.—Oh, good! I        afraid that you        .
#100661
A
was; had forgotten
B
am; have forgotten
C
was; will forget
D
am; forgot
The meeting        for two hours,but they still       any agreement.
#102274
A
has been going on;haven’t reached
B
has been going on; haven’t been reached
C
was going on; haven’t reached
D
was going on; haven’t been reached