1.

They wish they did their homework last night.

WRONG

2.

If only I can drive to school every day.

WRONG

3.

I wish you would concentrate on your work.

CORRECT

4.

If only we would have more mathematics classes this term.

WRONG

5.

Jim wished he hadn't missed his music lesson.

CORRECT

6.

Most people today wish they earn more money.

WRONG

7.

I wish Anita didn't keep interrupting the teacher in yesterday's biology class.

WRONG

8.

The director wishes he didn't have to cancel next week's trip.

CORRECT

9.

I wish you wouldn't tease the younger children.

CORRECT

10.

If only Julia has passed all her exams when she left school.

WRONG