1. You must have been delighted to see your aunt after such a long time.
2. Jessica and her mum could be shopping together now.
3. You should try buying Joanna a book for her birthday. It’s always a safe option.
Answer:
it was a long flight but eventually we arrived in the USA.
Hi Niya! Could you possibly provide me with some more details, so I am able to help you? Thank you!
IF I can sing well enough, I'll join the school chorus.
The IF implies that something is conditional i.e. it may happen, it may not happen (it depends on whether you can sing well enough!)
Hope this helps... :)