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Can, Could and Be Able To Exercise
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Can, Could and To Be Able To

Can, Could and To Be Able To

INFINITIVE PRESENT PAST PAST PARTICIPLE
to be able to can -could = had the ability to been able to
     She could play the violin when she was three  
    -was able to = managed to  
     We were able to escape the fire  
 
Choose the correct answer for each question.