According to the factory safety rules, all accidents _____ be reported to the safety officer.
#62239
A
may
B
can
C
would
D
shall
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We         arrive at six. But I’m sorry we are late. 
#63290
A
should
B
were supposed to
C
must
D
ought to
I was really anxious about you. You _______ home without a word.
#63535
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave