— Why were you wet through when you came to the meeting?     
— Because I _____ in the gym.  

A. work out          
B. had been working out   
C. was working out      
D. had been worked out
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科目:高中英語 來源:0101 期末題 題型:單選題

— Why were you wet through when you came to the meeting?     
— Because I _____ in the gym.  
[     ]
A. work out          
B. had been working out   
C. was working out      
D. had been worked out

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