The Greens have stayed in China for three years.(改为同义句)

1.The Greens came to China three years ago.
2It is three years since the Greens came to china.
3.Three years have gone since the Greens came to china

The Greens have stayed in China for three years.(改为同义句)
1.The Greens _stayed___ __in__ China three years ago.
2.___It_ __is__ three years _since___ the Greens came to china.
3.Three years __has__ _passed___ since the Greens came to china.