—What does the sign over there read?—"No person_______ smoke or carry a lighted cigarette, cigar or pipe in this area．"
#87756
A
shall
B
may
C
must
D
Will
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—Sorry, sir. I can’t answer this question. ---Well, you are supposed______ this part of history.
#86779
A
reading
B
to be reading
C
to have read
D
having read
The suggestion has been made that the sports meet _____ put off till next Monday.
#87829
A
was
B
be
C
would be
D
being
Messages ______ be changed from sound into electricity before they ______ be sent by radio.
#90077
A
must; will
B
have to; can
C
can; must
D
need; may
---Mike must have known that.---No, he ________. How _______ he?
#87806
A
mustn’t, must
B
may not, might
C
couldn’t, can
D
needn’t, need
Jack describe his father, who____ a brave boy many years ago, as a strong-willed man.
#87609
A
would be
B
would have been
C
must be
D
must have been