Your tent blew in the storm, but theirs ______.
你的帳篷再爆風中被破壞,但其他的沒有
Your tent blew in the storm, but theirs (didn't)( blew in the storm).
blow blew blown
是過去式,所以用did, 不用完成式的had
Your tent blew in the storm, but theirs ..-阿摩線上測驗