Professor Smith, along with his assistants, _____ on the project day and night to meet the deadline.
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A
work
B
working
C
is working
D
are working
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----I don’t suppose the police know who did it.----Well, surprisingly they do. A man has been arrested and _____ now.
#102461
A
has being questioned
B
is questioning
C
has questioned  
D
is being questioned
 Jimmy said that he would come to pick me up, but he _______ by now.
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A
hasn’t turned up
B
doesn’t turn up
C
won’t turn up
D
hadn’t turned up