—I think the man over there must be Bob. -- It_______ be him. He has______ to Australia. 
#78073
A
can’t, gone
B
can’t, been
C
may not, been
D
mustn’t, gone
推荐题目
—Can you sing or dance?     —_____.
#74695
A
Yes, I can
B
No, I can’t
C
I can sing
D
I like singing
It was dark when Mary went out. I wonder how she ______ through the black lane by herself.
#63439
A
dared not to go
B
dare going
C
not dare go
D
dared to go
They       have got lost, or had an accident.
#62726
A
can
B
might
C
must
D
mustn’t
Tom ____ be ill, for I saw him playing basketball an hour ago. 
#62553
A
mustn’t
B
needn’t
C
can’t
D
may not