`1.` Bill renocked that his success was due to incredible luck. (PUT) `->` Bill ____________ to incredible luck. `2.` Have you received your salary yet? (BEEN) `->` Have __________ yet? `3.` I wished I'd done more to help. `->` I regretted _______ more to help.

`1.` Bill put his success down to incredible luck. 

`->` Put st down : Coi cái gì nhờ 

`->` QKĐ : S + Ved + O.

`2.` Have your salary been given to you yet?

`->` Bị động HTHT (`?`): Have/has + S + been P2 (by O)?

`3.` I regretted having done more to help

`->` Regret + Ving : Hối hận vì đã làm gì

`->` Having P2 để nhấn mạnh.