1- a situation when you waited for a bus or a train 2- a challenging profession you know about

If you can talk about the cue card topic 
"Describe an interesting conversation 
you had with someone you didn't know."
 you should be able to talk about 
the following IELTS cue cards topics as well:
x
Describe a time when you had a conversation with a stranger.
x
Describe an interesting conversation or discussion you recently had.
x
Describe a conversation that influenced you.
x
Describe something interesting you did recently.
Describe a subject that you think should be removed from school education 
programmes.
 
You should say:
x
what the subject is 
x
which grade it is taught in 
x
why you think it is unnecessary for children to study it 
and explain what you would replace it with. 
[You will have to talk about the topic for one to two minutes. You have one 
minute to think about what you're going to say. You can make some notes to 
help you if you wish.]

---