1 Joe will fail the examination unless he study hard .
2 I won't come to Mike's party unless he invite me .
3 The teacher will get angry unless you obey her .
4 You won't feel better unless you stop working ...
5 She won't speak to you again unless you apologize .
6 Unless he ask me , I'll never help him
7 Unless you stop smoking, your cough ...
8 Unless you leave at once , I'll call the police.
9 Unless you pay attention.. , you won't ...
10 Unless you come home early, your parents will be ..