—Peter, could you come and help me in the kitchen, please?    
—Sorry, Mum. I _____ Lily with her English. 

A. help
B. helped
C. have helped
D. am helping
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科目：初中英語 來源：北京市期末題 題型：單選題

— Peter, could you come and help me in the kitchen, please?    
— Sorry, Mum. I _____ Lily with her English. 
[     ]
A. help
B. helped
C. have helped
D. am helping

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