The lazy bone pretended ______ earnestly when his father came into his study to see what
he was doing.     

A. studying  
B. to study  
C. to be studying  
D. to have studied

C
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The lazy bone pretended ______ earnestly when his father came into his study to see what
he was doing.     
[      ]

A. studying  
B. to study  
C. to be studying  
D. to have studied

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