Rewrite these sentences using an appropriate modal form to replace the words in italics.
1.
It is not necessary for you to wear a suit. Their company culture is quite informal.
You don't have to wear a suit.
2.
You are not allowed to drive without your seat belt on.
You mustn't to drive without your seat belt on.
3. If you are invited for dinner,
it is a good idea if you buy your hosts some flowers.
If you are invited for dinner, you should buy your hosts some flowers.
4. In many countries,
it is not good to point your finger at people.
In many countries, you shouldn't point your finger at people.
5. Although I know them all very well, I am
obliged to address my colleagues by their surname.
Although I know them all very well, I must address my colleagues by their surname.
6.
It is essential for all visitors to wear their name badge at all times.
You have to for all visitors to wear their name badge at all times.
7.
Is it necessary for me to buy my hosts an expensive gift?
Do you have to for me to buy my hosts an expensive gift?
8. In Canada, smoking
is prohibited in most public spaces.
In Canada, you mustn't smoking in most public spaces.