—Do you hear the noise outside?
—Yes．There must be some kids________outside．
A．have fun
B．has fun
C．to have fun
D．having fun
—Tom，where is your father?
—I’m not sure．He________in his office．
A．must be
B．may be
C．maybe
D．need be
Some people________feel sick when they read a book in a car or on a boat．
A．must
B．should
C．may
D．need
—________does this scarf belong to?
—Let me see．Oh，it may be________．
A．Who；hers
B．Who；her
C．Whose；her
D．Whose；hers
She is leaving________Beijing tomorrow．
A．at
B．on
C．for
D．with
—Do you know who the pen________?
—Sorry，I don't know．
A．belong
B．belong to
C．belongs to
D．belongs
