1.In Australia, you mustn’t to comment on a person’s accent.

.In Australia, you mustn’t to comment on a person’s accent. ( Bỏ to)

2.In my family, children has to get permission before leaving the dining table.

->In my family, children have to get permission before leaving the dining table.

3.When I came, the whole family is having dinner around a big dining table.

->.When I came, the whole family was having dinner around a big dining table.

VII

1.When you visit a temple in Thailand, you has to follow some important customs.

->.When you visit a temple in Thailand, you have to follow some important customs.

3. People can wear sandals, but these have to has a strap around the back.

-> People can wear sandals, but these have to have a strap around the back.

4.People should to lower their voice inside the temple.

->.People should  lower their voice inside the temple. ( Bỏ to)

5.Women have avoid touching monks. 

->Women avoid touching monks.( Bỏ have)