(2014·厦门适应性考试)Mr Wang must have watched the film So Young last night,________?
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A
mustn’t he 
B
hasn’t he
C
didn’t he 
D
needn’t he
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___deer are there on the hill?
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A
How much
B
How many
C
How far
D
How long
He has to finish the experiment today. He must be in the lab, ______?
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A
mustn’t he
B
won’t he
C
doesn’t he
D
isn’t he
What he lacks is more patience,___________? 
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A
isn't it
B
is it
C
doesn't he
D
does he