Question

By the time Sheila (get) ............ back, David (go) ................... home.

Answer 1

By the time Sheila (get) will have gotten back, David (go) will have gone home.

By the time ---> tương lai hoàn thành
CT: S + will + have + V3/ed + O
Dịch: Tại thời điểm đó, Shelia trở lại còn David đi về nhà

 

Answer 2

By the time Sheila will have gotten back, David will have gone home.