一、用括号中所给词的适当形式填空
1．What a ________ (peace) night it is!
2．The TV play ________ (it) is funny but it's too long.
3．It was ________ (believe) that a disabled man reached the top of the mountain without anyone's help.
4．Thanks to my teachers, I've made great ________ (progress)．
5．My parents encourage me ____________________(study) hard
every day.
