Choose the correct words or word combinations to complete the instruction. We usually write letters to people we aren't very close with. In these letters, we sound respectful. In these letters, we should use and verb forms. The tone of these letters be impolite.

Задание

Choose the correct words or word combinations to complete the instruction.

Choose the correct option.

We usually write [formal|semi-formal|informal] letters to people we aren't very close with.

In these letters, we [shouldn't|should|mustn't] sound respectful.

In these letters, we should use [formal language|informal language|less formal language] and [active|passive|future] verb forms.

The tone of these letters [must|should|shouldn't] be impolite.