I am _____ about what I say because careless remarks are likely to hurt others' feelings．

Martin was_____ to win the 100-meter race, but he fell to the ground and missed the chance.

Doctor Zhang is a friend of mine who works in a ________ school.

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

Tom’s mother was very____when he didn’t come back on time after school.