_____ and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery.
. —Have you finished your composition?—Yes, I _____it in twenty minutes.
It’s important that he_____ English well.
I’m sorry that I can’t help _____ trees because I am busy with the homework.
—What led to his success ?—He succeed _____ working hard .
.I don’t think that the sentence need ______again.