根据句意,用所给单词的适当形式完成下列句子.
1.In fact I'm rather _____(surprise)you haven't done already.
2.We shall find out the _____(true)early or late.
3.You've made several grammatical _____(mistake)in the composition.
4.I'm _____(terrible)sorry about that.
5.Believe it or not,he _____(actual)won!