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

participated in the rescue of the other workers. Actually, almost everyone in 
the surrounding apartments also came out for help as they supposed that 
there might be some other consequences following this accident. 
This was a very dangerous accident and in fact, the damages could have been 
more but due to the preventive measures adopted by the construction 
authority, the damage radius has been minimised. If there were unplanned 
construction, the accident could have taken lives of more other workers at the 
project. But fortunately, nothing such things happened. The remaining workers 
were safe and sound. The construction authority checked the cable and it was 
proved that the cable has torn due to the heavy load and regular use. They 
took other measures to prevent further accidents. 
If you can talk about the cue card topic 
"Describe an accident you have seen 
or heard about."
 you should be able to talk about the following IELTS cue 
cards as well:

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x
Describe a horrible accident you have witnessed.
x
Describe a road accident you have seen or heard about.
x
Describe a news that was sad for you.
x
Describe a bad experience you have had in your life. 
x
Describe a negative experience you have had in your life.
x
Describe an accident you have seen. 
Describe your favourite Restaurant.
 
You should say:
x
where it is located 
x
what the restaurant looks like 
x
what kinds of foods and beverages it offers 
and explain what makes this restaurant so special to you. 
[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.]