There’s still an hour left, you _____ go in a hurry. 
#74519
A
must
B
needn’t
C
can
D
mustn’t
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My sister met him at Ningbo Grand Theatre yesterday afternoon, so he         your lecture. 
#63615
A
couldn’t attend
B
mustn’t have attended
C
shouldn’t attend
D
couldn’t have attended
The flowers in my room         every day, or they’ll die.
#75306
A
must water
B
must be watered
C
should water
D
can be watered