.—She must have gone back to the valley. —No, she_________. The entrance to it was nowhere to be found. 
#88490
A
mustn’t
B
needn’t
C
couldn’t
D
may not
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But for the arrival of the police,  you __________ killed yesterday.
#87912
A
might have been
B
could have been
C
may have
D
would be
But for the help of my English teacher, I ____  the first prize in the English Writing Competition. 
#90431
A
would not win
B
would not have won
C
would win
D
would have won
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