-Hi, Tom. Is this your dog?-No, it’s Cathy’s. _________ is at home now. 
#77178
A
Mine
B
My
C
Hers
D
Her
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My sister met him at the street yesterday afternoon, so he __________ your lecture.
#63077
A
shouldn’t have attended
B
couldn’t have attended
C
mustn’t have attended
D
needn’t have attended