( ) Bob can't come out to play because he help Dad in the garden. A. can B. can't C. has to 查看更多

 

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Bob can't come out to play because he          help Dad in the garden.          
[     ]
A. can        
B. can't      
C. has to    
D. must

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Bob can't come out to play because he ______ help Dad in the garden.
[     ]
A. can
B. can't
C. has to
D. must

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