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The students ____ on a farm for ten days.Then they ____ to a

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The students ____ on a farm for ten days.Then they ____ to a factory.Though they ____ back at sch
The students ____ on a farm for ten days.Then they ____ to a factory.
Though they ____ back at school,they still remembered those farmers and workers.
A.have stayed; went; were
B.had stayed; go; are
C.have stayed; go; have been
D.had stayed; went; were
The students ____ on a farm for ten days.Then they ____ to a
D