— There'ssomeone knocking on the door. Who _____it be?— It must be Mary. She promised to be here at 8：00.
#62863
A
must
B
need
C
shall
D
Can
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----The task is challenging and demanding. Who do you think can make it?---- ___________my partner have a try? I think she is the right person to do it.
#62861
A
Will
B
Might
C
Should
D
Shall
--- Listen! David is talking happily with his mother in the next room. --- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
#77427
A
should
B
must
C
can’t
D
mustn’t
He is ______ outstanding student from ______ university in America.
#77185
A
a; a
B
a; an
C
an; a
D
an; an