答案：D

本题考查动词辨析。①try to do尽力做某事，不含成功之意。如：Try not to break it. ②manage to do意为succeed in doing sth。③succeed不接不定式。④attempt to do试图做某事。如：She attempted to go on with her work in the house. But she could not. 这里指“尽管重，但我可以把它搬上楼”，故选D。