She didn't stop learning German until the age of 24. 

1. She didn't stop learning German until the age of 24. 

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2. We didn’t find out about the meeting until he phoned us. 

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3. I didn’t know how to ride a bicycle until I was 15.  

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4. I didn’t get up until half past ten. 

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5. He didn’t have enough money unitl he got a part-time job.

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