If the green light doesn’t come on, you ______ go across the street.
#76761
A
must
B
needn’t
C
mustn’t
D
have to
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You ______ be serious! You’re actually going to lend him money again？.
#74743
A
needn’t
B
can’t
C
shouldn’t
D
mustn’t
--The man in a black suit _______ be our youth worker.--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.
#75725
A
must; can’t
B
can; mustn’t
C
can; could
D
must; won’t
---Look at that girl! Is that Susan?---No , it _______ be her. She has gone back to her hometown.
#74215
A
mustn’t
B
can’t
C
must
D
might
—Catherine, I have cleaned the room for you.—Thanks, you __________it. I could manage it myself.
#63430
A
needn’t do
B
needn’t have done
C
mustn’t do
D
shouldn’t have done