Our attitude toward our teachers should be _____, but not slavish or superstitious.

He volunteered to work in a remote mountainous village in West China last year, which is still _____ on foot now.

It takes a long time to go there by train； it’s ＿＿＿＿by road. 

Although I can walk about, there is still a _____ pain in my leg.

He became inspired when he thought about helping ordinary people       to cholera.