Read it through once

Nor did Oliver’s time hang heavy on his hands, although the young lady had not yet left her chamber, and there were no evening walks, save now and then, for a short distance, with Mrs. Maylie. He applied himself, with redoubled assiduity, to the instructions of the white-headed old gentleman, and laboured so hard that his quick progress surprised even himself. It was while he was engaged in this pursuit, that he was greatly startled and distressed by a most unexpected occurrence.