问题

He____know the answer, but I’m not sure.
A:maybe
B:may be
C:may
D:must
B:may be
C:may
D:must
正确答案是:
同类题型
Are you feeling tired after the long walk? —_____. In fact, I feel quite relaxed. [ ]
. A look at recent trends in world fisheries reveals ________ the ocean on a global scale.
_____ the fans are waiting for the popular singer outside the concert hall.
Do you go __________ a school trip __________ a museum every year?[ ]
How often do you exercise? — ever. Because I am very busy with my work.