A : it looks like you're almost done with your project.
B : Yes, I am finally. I've been working on it ____ 7:00 this morning.
(b)from ©since
답은 since인데, 여기서 from은 왜 될 수 없나요;;;문맥상 되는것 같은데요....

A : it looks like you're almost done with your project.
B : Yes, I am finally. I've been working on it ____ 7:00 this morning.
(b)from ©since
답은 since인데, 여기서 from은 왜 될 수 없나요;;;문맥상 되는것 같은데요....


1
