Accustomed to ______ the steep mountain, he had no difficulty reaching the top.
A.climbing
B.climb
C.having climbed
D.have climbed
网友回答
A解析试题分析：固定句型bee/be accustomed to doing sth.习惯于做某事。故选
A. 这不选C或D。因为此处不存在先后关系一说，having done 一般非谓语动词连用，这里不能与宾语climbing连用。考点：be accustomed to 习惯于…点评：平时多注意积累此类句型，高中阶段to为介词要注意以下几点：