not willing to do something (adj.)

The ability to speak or write a language easily, well, and quickly.

A group of words in a fixed order that has a particular meaning that is different from the meanings of each word on its own.

great happiness or pleasure

To improve the quality or usefulness of something, or change it for something newer or of a better standard.

It is an online presentation-building tool that facilitates audience engagement. The tool allows presenters to include polls, multiple-choice and open-ended questions, quizzes, and scales that audience members can interact with live.

Name three C1 grammar structures.