5 предложений с определённым артиклем и 5 предложений с неопределённым артиклем)))пожалуйста помогите)

1.I will come in an hour.
2. he didnt say a word.
3 What a clever man!
4 She is quite a young girl.
5 It is not so simple a problem as it seems.

6 pass me the bread, please.
7 the water in this river is very cold.
8I like the music of this ballet.
9 All the students of our group attended the meeting.
10 the big house at the end of the street is mine.