从括号中选择恰当的单词或短语补充句子We had great difficulty (walked/walking/having walked) home in the snow________(Catching/caught/To catch) the early train,you'll have to get up early and brush in a taxi.

问题描述:

从括号中选择恰当的单词或短语补充句子
We had great difficulty (walked/walking/having walked) home in the snow
________(Catching/caught/To catch) the early train,you'll have to get up early and brush in a taxi.

To catch 不定式作目的状语.