have been to third
had missed
it is
楼上前三道都是对的，但第四题翻译错了，如果是初二水平，应该是 are used to （be used to doing sth.习惯于做某事）
have been to third；
had missed；
It is；
has adjusted to；
1、have been to third
句意是去过海南3次了，用过去完成时
2、had missed
3、It is
4、has used to
have been to thrice
didn't catch
It is
are used to
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