IELTS Grammar: verb tenses in general writing

Have another look at the letter that I shared last Sunday (even if you're not doing the General test), and you'll see that I used a variety of verb tenses.

Can you name the verb tenses in the phrases below?

1. I'm just writing to offer you
2. I won't be able to use
3. I told you I was going to a gig
4. there's a guitarist who's playing this Saturday
5. you'll be blown away
6. the concert starts at 7pm
7. I've been asked to visit a client
8. if you're free on Saturday
9. he'll be going to the gig