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
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-----He should have come to join in the thorough cleaning. -----He________, I think. It’s not his turn.
#88328
A
needn’t have to
B
needn’t have
C
didn’t have to
D
doesn’t need to
Tom, ________________ you from taking a hand in that affair, you ______________ in prison.
#87060
A
if I didn’t stop; would have stayed
B
had I stopped; would be staying
C
shouldn’t I have stopped; would stay
D
if I hadn’t stopped; would have stayed
—Did you call to book a ticket for the concert ?—Not yet, but I _______ .
#88011
A
should have
B
may
C
ought to
D
shall
The boss looked very worried and demanded that the work________before we went home.
#87293
A
wound be finished
B
was finished
C
must be finished
D
be finished