1 Don't trouble trouble until trouble troubles you
2 It is not polite to stare at others for long
3 They are looking for the lost girl
4 I find my English book lost
5 Who discovered the America?
6 How did you deal with the survey papers?
7 I waited for you at the other side of the river yesterday
8 You will open the box after pressing the button
9 Please turn on the lights,I can't see the words on the board
10 I saw some boys playing football on the playground