—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday? —I ___________and failed to hear the phone.
#89324
A
might have slept
B
must be sleeping
C
might be sleeping
D
must have been sleeping
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The pilot kept calm in the terrible storm, otherwise the accident ______.
#90178
A
couldn’t be prevented
B
mustn’t have prevented
C
wouldn’t have been prevented
D
shouldn’t prevent