.--- Where is your father? --- I'm not sure. He_______ in the office.
#75019
A
must be
B
maybe
C
may be
D
perhaps
推荐题目
(2013·四川，5)—Why are your eyes so red？You________have slept well last night.—Yeah，I stayed up late writing a report.
#62494
A
can't
B
mustn't
C
needn't
D
won't
— I heard they went skiing in the mountains last winter. — It ________ true because there was little snow there.
#63587
A
may not be
B
won’t be
C
couldn’t be
D
will be
He had no choice but to go on because it is their agreement that no one ______ quit the plan half way.
#63122
A
need
B
will
C
shall
D
can