Mr Lee found it hard _______(travel) in the city.

问题描述:

Mr Lee found it hard _______(travel) in the city.

to travel
it在这里是形式宾语
李先生发现在城市里旅行是困难的。。。

to travel
adj.+to do

Mr Lee found it hard to travel_______(travel) in the city.
find it hard/easy/good to do sth
这个是固定搭配的,要记住就好~

to travel