Read the definitions carefully and select the correct words.
1. someone who is available is not busy and has enough time to talk to you
2. if you are meant to do something, you should do it, especially because someone has told you to or because you are responsible for it
3. used to say what someone should or should not do, especially because of rules or what someone in authority has said
4. to say that something is definitely true
5. useful to you because it saves you time, or does not spoil your plans or cause you problems
6. if people get together, they meet in order to spend time with each other
7. used to make a suggestion
8. I want to, bit it's impossible
9. to be able to go to an event, meeting etc that has been arranged
10. to change the date or time of a planned event or action to a later one
11. a meeting at which something, especially a new product or idea, or piece of work, is shown to a group of people
12. to delay doing something or to arrange to do something at a later time or date, especially because there is a problem or you do not want to do it now
13. to make someone remember something that they must do