Joe kept pace with his brother as they were running around the track until he became too tired and had to stop.

The answers are: B &' E

Explanation:

B- Until Joe became too tired and had to stop, he kept pace with his brother as they were running around the track.

E- Until his brother became too tired and had to stop, Joe kept pace with him as they were running around the track.

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what does the teacher mean

ah, shun the horrid gulf! by scylla fly.