See who’s there! ____ it be Mary?
#89021
A
May
B
Must
C
Can
D
Will
推荐题目
Tony ____ the invitation, otherwise he would have attended your birthday party. 
#86508
A
couldn’t have received
B
mustn’t have received
C
needn’t have received
D
shouldn’t have received
The happy smile on her face suggests that she _______ to the party tomorrow evening.
#87086
A
will go
B
should go
C
would have gone
D
is about to go
The light is still on. They ___ to turn it off when they left the room.
#87772
A
must forget
B
could have forgotten
C
may forget
D
must have forgotten