___they___(arrive)at school yet? Yes,they___(be)in classroom now.

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___they___(arrive)at school yet? Yes,they___(be)in classroom now.
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___they___(arrive)at school yet? Yes,they___(be)in classroom now.
___they___(arrive)at school yet? Yes,they___(be)in classroom now.

___they___(arrive)at school yet? Yes,they___(be)in classroom now.
依次填写:
Have arrived
are