Each of the following sentences contains a mistake. 1. In Australia, you mustn’t to comment on a person’s accent. .................................................................................................. 2. In my family, children has to get permission before leaving the dining table. .................................................................................................. 3. When I came, the whole family is having dinner around a big dining table. .................................................................................................. 4. Lang Lieu couldn’t buy any special food while he was very poor. .................................................................................................. 5. Many Vietnamese people prepare for the holiday by pay their debts and cleaning their homes. …………………………………………………………………………. 6. If you are interested on helping, just show up on Saturday. …………………………………………………………………………. 7. I was play football when she called me. ....................................................................................... 8. Was you study Math at 5 p.m. yesterday? ....................................................................................... 9. What was she do while her mother was making lunch? ....................................................................................... 10. Where did you went last Sunday? .......................................................................................