could do it
He could do it.
La meditación funcionaba para el cáncer, y podría hacerlo ahora.
Meditation worked for cancer, and it might work now.
— El club de la lucha (1999)
No podría hacerlo sin tu ayuda.
I couldn't do it without your help.
Mary no podría hacerlo.
Mary couldn't do it.
I told myself I could do it.
Sabía que Tom podría hacerlo.
I knew Tom could do it.
Mary dice que pensó que podría hacerlo.
Mary says she thought she could do it.