— ____ I go out to play now , Mum ?     — No , you ____ . 
#89777
A
May ; shouldn''t
B
Can ; needn''t
C
Must ; can''t
D
May ; must
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“Do you think he is lazy?” “I _________ so once, but I don’t now.”
#89120
A
may have thought
B
can have thought
C
may think
D
might think
He ___ away before we arrived, since the house was deserted.
#87613
A
shall have gone
B
should have gone
C
could have gone
D
must have gone